diff --git a/web/src/App.vue b/web/src/App.vue
index 18f3200..3e25029 100644
--- a/web/src/App.vue
+++ b/web/src/App.vue
@@ -1,12 +1,12 @@
 <template>
   <v-app>
     <v-main>
-      <div v-if="store.token === null">
+      <!-- <div v-if="store.token === null">
         <loginPage />
       </div>
-      <div v-else>
+      <div v-else> -->
         <MainPage />
-      </div>
+      <!--</div>-->
     </v-main>
   </v-app>
 </template>
diff --git a/web/src/components/CategoryContainer.vue b/web/src/components/CategoryContainer.vue
index b58055f..6cfd695 100644
--- a/web/src/components/CategoryContainer.vue
+++ b/web/src/components/CategoryContainer.vue
@@ -1,97 +1,18 @@
 <template>
-  <div class="mt-3">
-    <v-row no-gutters>
-      <v-col cols="11">
-        <h2>{{ licenseGroup.name }}:</h2>
-      </v-col>
-      <v-col>
-        <v-btn
-          block
-          class="ml-7"
-          flat
-          size="small"
-          color="isHovering ? 'red' : undefined"
-          variant="text"
-          v-model="deleteDialog"
-          @click="deleteDialog = true"
-        >
-          <Trash />
-        </v-btn>
-        <v-dialog v-model="deleteDialog" width="600" persistent>
-          <v-card max-width="600">
-            <v-card-title>
-              <span class="headline">Delete group</span>
-            </v-card-title>
-            <v-card-subtitle>
-              <span>Delete a group inside the database</span>
-            </v-card-subtitle>
-            <v-card-text>
-              <h4>This action is irreversible!</h4>
-            </v-card-text>
-            <v-card-actions>
-              <v-row>
-                <v-col cols="8" align="right" no-gutters>
-                  <v-btn
-                    class="ms-auto"
-                    text="Cancel"
-                    color="blue darken-1"
-                    @click="deleteDialog = false"
-                  ></v-btn>
-                </v-col>
-                <v-col>
-                  <v-btn
-                    class="ms-auto"
-                    text="Confirm Delete"
-                    type="submit"
-                    color="red darken-1"
-                    @click="deleteMutate"
-                  ></v-btn>
-                </v-col>
-              </v-row>
-            </v-card-actions>
-          </v-card>
-        </v-dialog>
-      </v-col>
-    </v-row>
-
-    <li v-for="license in licenseGroup.licenses" :key="license.id">
-      <ListViewElement :license="license" />
-    </li>
+  <div>
+    <h3>{{ props.nodeGroup.name }}</h3>
+    <ul>
+      <li v-for="node in props.nodeGroup.nodes" :key="node.uuid">
+        <ListViewElement :node="node" />
+      </li>
+    </ul>
   </div>
 </template>
 
 <script setup lang="ts">
+import { NodeGroup } from "@/types";
 import ListViewElement from "./ListViewElement.vue";
-import { LicenseGroup } from "@/types";
-import { Trash } from "lucide-vue-next";
-import { ref } from "vue";
-import { useMutation, useQueryClient } from "@tanstack/vue-query";
-import { axiosInstance } from "@/client";
 
-const { licenseGroup } = defineProps<{ licenseGroup: LicenseGroup }>();
+const props = defineProps<{ nodeGroup: NodeGroup }>();
 
-const deleteDialog = ref(false);
-
-const queryClient = useQueryClient();
-
-const id = licenseGroup.id;
-
-const { mutate: deleteMutate } = useMutation({
-  mutationFn: async () => {
-    await axiosInstance.delete(`/groups/${id}`);
-  },
-  onError: (error) => {
-    console.log(error);
-  },
-  onSuccess: () => {
-    queryClient.invalidateQueries({ queryKey: ["licenses"] });
-    deleteDialog.value = false;
-  },
-});
-</script>
-
-<style scoped>
-li {
-  list-style-type: none;
-}
-</style>
+</script>
\ No newline at end of file
diff --git a/web/src/components/HeaderBar.vue b/web/src/components/HeaderBar.vue
index c0bb7d0..263f498 100644
--- a/web/src/components/HeaderBar.vue
+++ b/web/src/components/HeaderBar.vue
@@ -9,175 +9,6 @@
         <template v-if="!user" />
         <UsersDialog v-else-if="user.admin" />
         <UsersEditActions v-else :admin-menu="false" :user="user!" />
-        <!--               -->
-        <!-- GROUP SECTION -->
-        <!--               -->
-        <v-btn icon class="mr-3" @click="group = true">
-          <FolderPlus />
-        </v-btn>
-        <v-dialog v-model="group" width="600" persistent>
-          <v-card max-width="600">
-            <v-form @submit.prevent="submitGroup">
-              <v-card-title>
-                <span class="headline">Add Group</span>
-              </v-card-title>
-              <v-card-subtitle>
-                <span> Add a Group to the Database</span>
-              </v-card-subtitle>
-              <v-card-text>
-                <div>
-                  <v-text-field
-                    label="Group Name *"
-                    v-model="groupGroupName"
-                    variant="outlined"
-                    required
-                    clearable
-                    :rules="licenseGroupRules"
-                    class="mb-3"
-                  ></v-text-field>
-                </div>
-              </v-card-text>
-              <v-card-actions>
-                <v-row>
-                  <v-col cols="10" align="right" no-gutters>
-                    <v-btn
-                      class="ms-auto"
-                      text="Cancel"
-                      @click="group = false"
-                      color="blue darken-1"
-                    ></v-btn>
-                  </v-col>
-                  <v-col>
-                    <v-btn
-                      class="ms-auto"
-                      text="Add"
-                      type="submit"
-                      color="blue darken-1"
-                    ></v-btn>
-                  </v-col>
-                </v-row>
-              </v-card-actions>
-            </v-form>
-          </v-card>
-        </v-dialog>
-        <!--             -->
-        <!-- ADD SECTION -->
-        <!--             -->
-        <v-btn icon class="mr-3" @click="add = true">
-          <Plus />
-        </v-btn>
-        <v-dialog v-model="add" width="600" persistent>
-          <v-card max-width="600">
-            <v-form @submit.prevent="submit">
-              <v-card-title>
-                <span class="headline">Add License</span>
-              </v-card-title>
-              <v-card-subtitle>
-                <span> Add an extra License to the database</span>
-              </v-card-subtitle>
-              <v-card-text>
-                <div>
-                  <v-text-field
-                    label="License Name *"
-                    v-model="addLicenseName"
-                    variant="outlined"
-                    required
-                    clearable
-                    :rules="licenseNameRules"
-                    class="mb-3"
-                  ></v-text-field>
-                  <v-text-field
-                    label="License Key *"
-                    v-model="addLicenseKey"
-                    variant="outlined"
-                    required
-                    clearable
-                    :rules="licenseKeyRules"
-                    class="mb-3"
-                  ></v-text-field>
-                  <v-autocomplete
-                    clearable
-                    label="Select Group *"
-                    :items="data"
-                    variant="outlined"
-                    :rules="selectGroupRules"
-                    class="mb-1"
-                    v-model="addLicenseGroup"
-                  ></v-autocomplete>
-                  <!-- Divider maybe remove -->
-                  <v-divider
-                    class="border-opacity-50"
-                    :thickness="2"
-                  ></v-divider>
-                  <div>
-                    <div class="mb-3 mt-3">
-                      <v-date-input
-                        label="Start Date (optional)"
-                        variant="outlined"
-                        prepend-icon=""
-                        prepend-inner-icon="mdi-calendar-check"
-                        clearable
-                        v-model="addStartDate"
-                        hide-details
-                        @click:clear="addStartDate = undefined"
-                      ></v-date-input>
-                    </div>
-                    <div class="mb-6">
-                      <v-date-input
-                        label="Stop Date (optional)"
-                        variant="outlined"
-                        prepend-icon=""
-                        prepend-inner-icon="mdi-calendar-remove"
-                        clearable
-                        v-model="addStopDate"
-                        hide-details
-                        @click:clear="addStopDate = undefined"
-                      ></v-date-input>
-                    </div>
-                  </div>
-                  <v-number-input
-                    label="Amount (optional)"
-                    users
-                    variant="outlined"
-                    clearable
-                    :min="0"
-                    v-model="addAmount"
-                  >
-                  </v-number-input>
-                  <v-text-field
-                    label="Notes (optional)"
-                    v-model="addNotes"
-                    variant="outlined"
-                    clearable
-                  ></v-text-field>
-                  <span class="dialogNote">
-                    all fields marked with * are required
-                  </span>
-                </div>
-              </v-card-text>
-              <v-card-actions>
-                <v-row>
-                  <v-col cols="10" align="right" no-gutters>
-                    <v-btn
-                      class="ms-auto"
-                      text="Cancel"
-                      color="blue darken-1"
-                      @click="add = false"
-                    ></v-btn>
-                  </v-col>
-                  <v-col>
-                    <v-btn
-                      class="ms-auto"
-                      text="Add"
-                      type="submit"
-                      color="blue darken-1"
-                    ></v-btn>
-                  </v-col>
-                </v-row>
-              </v-card-actions>
-            </v-form>
-          </v-card>
-        </v-dialog>
       </div>
       <!-- Search -->
       <v-text-field
@@ -206,34 +37,15 @@
 
 <script setup lang="ts">
 import { store } from "@/store";
-import { SubmitEventPromise } from "vuetify";
 import { ref } from "vue";
-import { Plus, LogOut, FolderPlus } from "lucide-vue-next";
-import { useQuery, useMutation, useQueryClient } from "@tanstack/vue-query";
+import { LogOut } from "lucide-vue-next";
+import { useQuery } from "@tanstack/vue-query";
 import UsersDialog from "./NavBarIcons/UsersDialog.vue";
 import UsersEditActions from "./NavBarIcons/UsersEditActions.vue";
 import { axiosInstance } from "@/client";
-import { LicenseGroup, CreateLicenseDto, CreateGroupDto, User } from "@/types";
+import { User } from "@/types";
 import { search } from "@/store";
 
-const queryClient = useQueryClient();
-
-const { data } = useQuery({
-  queryKey: ["licenses"],
-  queryFn: async () => {
-    const res = await axiosInstance.get<LicenseGroup[]>("/licenses");
-    return res.data;
-  },
-  select: (data) => {
-    return data.map((group) => {
-      return {
-        title: group.name,
-        value: group.id,
-      };
-    });
-  },
-});
-
 const { data: user } = useQuery({
   queryKey: ["user"],
   queryFn: async () => {
@@ -242,124 +54,10 @@ const { data: user } = useQuery({
   },
 });
 
-const { mutate: licenseMutate } = useMutation({
-  mutationFn: async (newLicense: CreateLicenseDto) => {
-    await axiosInstance.post("/licenses", newLicense);
-  },
-  onError: (error) => {
-    snackbar.value = true;
-  },
-  onSuccess: () => {
-    queryClient.invalidateQueries({ queryKey: ["licenses"] });
-    add.value = false;
-  },
-});
-
-const { mutate: groupsMutate } = useMutation({
-  mutationFn: async (newGroup: CreateGroupDto) => {
-    await axiosInstance.post("/groups", newGroup);
-  },
-  onError: (error) => {
-    snackbar.value = true;
-  },
-  onSuccess: () => {
-    queryClient.invalidateQueries({ queryKey: ["licenses"] });
-    group.value = false;
-  },
-});
-
 function handlelogout() {
   store.setToken(null);
 }
-
-async function submit(event: SubmitEventPromise) {
-  const result = await event;
-  if (result.valid && addLicenseGroup.value) {
-    const data = {
-      name: addLicenseName.value,
-      group_id: addLicenseGroup.value,
-      amount: addAmount.value,
-      key: addLicenseKey.value,
-      start: addStartDate.value ?? null,
-      end: addStopDate.value ?? null,
-      note: addNotes.value,
-    };
-    console.log(data);
-    licenseMutate(data);
-  } else {
-    console.log("Invalid");
-  }
-}
-
-async function submitGroup(event: SubmitEventPromise) {
-  const result = await event;
-  if (result.valid) {
-    const groupsData = {
-      name: groupGroupName.value,
-    };
-    console.log(groupsData);
-    groupsMutate(groupsData);
-  } else {
-    console.log("Invalid");
-  }
-}
-
 const snackbar = ref(false);
-
-//
-// GROUP SECTION
-//
-
-const group = ref(false); // Dialog for Group
-const groupGroupName = ref<string>("");
-
-// Rules for Group Dialog
-const licenseGroupRules = [
-  (value: string) => {
-    if (value) return true;
-
-    return "YOU MUST ENTER (A GROUP NAME)";
-  },
-];
-//
-//  ADD SECTION
-//
-const add = ref(false);
-// References for Add License Dialog
-const addLicenseName = ref<string>("");
-const addLicenseKey = ref<string>("");
-const addLicenseGroup = ref<string>();
-
-// Rules for Add License Dialog
-const licenseNameRules = [
-  (value: string) => {
-    if (value) return true;
-
-    return "YOU MUST ENTER (A LICENSE NAME)";
-  },
-];
-const selectGroupRules = [
-  (value: string) => {
-    if (value) return true;
-
-    return "YOU MUST SELECT (A LICENSE GROUP)";
-  },
-];
-
-const licenseKeyRules = [
-  (value: string) => {
-    if (value) return true;
-
-    return "YOU MUST ENTER (A LICENSE KEY)";
-  },
-];
-// Optional Fields
-const addAmount = ref<number | undefined>();
-const addNotes = ref<string | undefined>("");
-
-// Date Picker
-const addStartDate = ref<Date | undefined>();
-const addStopDate = ref<Date | undefined>();
 </script>
 
 <style scoped>
diff --git a/web/src/components/ListViewElement.vue b/web/src/components/ListViewElement.vue
index cb2fb21..1c22749 100644
--- a/web/src/components/ListViewElement.vue
+++ b/web/src/components/ListViewElement.vue
@@ -4,87 +4,35 @@
       <v-expansion-panels>
         <v-expansion-panel>
           <v-expansion-panel-title>
-            <div class="mr-3">
-              {{ license.name }}
-            </div>
-
-            <div
-              class="mr-3 d-flex align-self-center"
-              style="align-items: center"
-            >
-              <KeyRound class="mr-1" />
-              {{ license.key }}
-            </div>
-
-            <div
-              class="mr-3 d-flex align-self-center"
-              style="align-items: center"
-            >
-              <CalendarCheck />
-              <span>
-                {{
-                  license.start
-                    ? new Date(license.start).toLocaleDateString()
-                    : "Indefinitely"
-                }}
-              </span>
-            </div>
-
-            <div
-              class="mr-3 d-flex align-self-center"
-              style="align-items: center"
-            >
-              <CalendarX />
-              <span>
-                {{
-                  license.end
-                    ? new Date(license.end).toLocaleDateString()
-                    : "Indefinitely"
-                }}
-              </span>
-            </div>
-
-            <div
-              class="mr-3 d-flex align-self-center"
-              style="align-items: center"
-            >
-              <img
-                src="../assets/doublekey.svg"
-                alt="logo"
-                class="logo mr-1"
-                width="24"
-              />
-              <span
-                v-if="license.amount == null || license.amount == undefined"
-              >
-                <Infinity />
-              </span>
-              <span v-else>
-                {{ license.amount }}
-              </span>
+            <div class="d-flex justify-content-between align-items-center">
+              <div class="mr-3" v-if="node.status === 200">
+                Name: {{ node.name }} (Status: online)
+              </div>
+              <div class="mr-3" v-else>
+                Name: {{ node.name }} (Status: offline)
+              </div>
             </div>
           </v-expansion-panel-title>
-          <v-expansion-panel-text>
-            Notes:
-            <div class="flex-nowrap d-flex" no-gutters>
-              <div
-                class="flex-grow-1 overflow-x-auto border-e-md align-self-end"
-                cols="10"
-              >
-                {{ license.note }}
-              </div>
 
-              <div align="end">
-                <!--              -->
-                <!-- EDIT SECTION -->
-                <!--              -->
-                <UpdateDialog :license="license" />
-                <!--                 -->
-                <!--   DELETE BTN    -->
-                <!--                 -->
-                <DeleteDialog :license="license" />
+          <v-expansion-panel-text>
+            <div class="d-flex flex-column">
+              <div class="d-flex align-items-center mb-2">
+                <span class="mr-2">Coordinates:</span>
+                <span>La: {{ node.coordla }}, Long: {{ node.coordlong }}</span>
+                </div>
+              </div>
+              <div class="d-flex align-items-center mb-2">
+                <span class="mr-2">Temperature:</span>
+                <span>{{ node.temperature }}°C</span>
+              </div>
+              <div class="d-flex align-items-center mb-2">
+                <span class="mr-2">Battery:</span>
+                <span>{{ node.battery }}%</span>
+              </div>
+              <div class="d-flex align-items-center mb-2">
+                <span class="mr-2">Runtime:</span>
+                <span>{{ node.runtime }} hours</span>
               </div>
-            </div>
           </v-expansion-panel-text>
         </v-expansion-panel>
       </v-expansion-panels>
@@ -93,38 +41,21 @@
 </template>
 
 <script setup lang="ts">
-import { License } from "@/types";
-import { Infinity, KeyRound, CalendarCheck, CalendarX } from "lucide-vue-next";
-import UpdateDialog from "./UpdateDialog.vue";
-import DeleteDialog from "./DeleteDialog.vue";
+import { Node } from "@/types"; 
 import { ComputedRef, inject, ref, watch } from "vue";
 import { key } from "@/store";
 
-const { license } = defineProps<{
-  license: License;
-  /*id: string;
-  licenseName: string;
-  licenseKey: string;
-  startDate: Date | null;
-  endDate: Date | null;
-  amount?: number;
-  notes?: string;*/
-}>();
-
+const props = defineProps<{ node: Node }>();
 const visible = ref(true);
-
 const { searching, visibleIds } = inject(key) as {
   searching: ComputedRef<boolean>;
   visibleIds: ComputedRef<string[]>;
 };
 
 watch([searching, visibleIds], ([searching, visibleIds]) => {
-  if (!searching) {
-    visible.value = true;
-  } else {
-    visible.value = visibleIds.includes(license.id);
-  }
+  visible.value = searching ? visibleIds.includes(props.node.uuid) : true;
 });
+
 </script>
 
 <style scoped>
@@ -132,4 +63,9 @@ watch([searching, visibleIds], ([searching, visibleIds]) => {
   display: flex;
   align-items: center;
 }
+
+.v-text-field {
+  max-width: 200px; 
+  width: 100%; 
+}
 </style>
diff --git a/web/src/components/MainPage.vue b/web/src/components/MainPage.vue
index 0e081fc..f5ebf29 100644
--- a/web/src/components/MainPage.vue
+++ b/web/src/components/MainPage.vue
@@ -3,10 +3,9 @@
     <HeaderBar />
     <div class="ma-8">
       <div v-if="isPending">Loading...</div>
-      <div v-else-if="isError">Error: {{ error?.message }}</div>
       <ul v-else-if="data">
-        <li v-for="group in data" :key="group.id">
-          <CategoryContainer :licenseGroup="group" />
+        <li v-for="nodeGroup in data" :key="nodeGroup.groupId">
+          <CategoryContainer :nodeGroup="nodeGroup" />
         </li>
       </ul>
     </div>
@@ -18,44 +17,68 @@ import HeaderBar from "./HeaderBar.vue";
 import CategoryContainer from "./CategoryContainer.vue";
 import { useQuery } from "@tanstack/vue-query";
 import { axiosInstance } from "@/client";
-import { LicenseGroup, License } from "@/types";
+import { NodeGroup } from "@/types"; 
 import { search, key } from "@/store";
 import MiniSearch from "minisearch";
 import { computed, provide } from "vue";
 
-const { isPending, isError, data, error } = useQuery({
-  queryKey: ["licenses"],
-  queryFn: async () => {
-    const res = await axiosInstance.get<LicenseGroup[]>("/licenses");
-    console.log(res.data);
-    return res.data;
+const mockNodeGroups: NodeGroup[] = [
+  {
+    groupId: "group-1",
+    name: "Test Node Group 1",
+    nodes: [
+    {
+      uuid: "123e4567-e89b-12d3-a456-426614174000",
+      name: "Sensor Node A1",
+      status: 502,
+      coordla: 52.5200,
+      coordlong: 13.4050,
+      temperature: 22.5,
+      battery: 85,
+      runtime: 120,
+    },
+    {
+      uuid: "223e4567-e89b-12d3-a456-426614174001",
+      name: "Sensor Node A2",
+      status: 200,
+      coordla: 48.8566,
+      coordlong: 2.3522,
+      temperature: 20.0,
+      battery: 90,
+      runtime: 100,
+    },
+    ]
   },
-  refetchInterval: 60 * 1000,
+];
+
+const { isPending, isError, data, error } = useQuery({
+  queryKey: ["nodeGroups"],
+  queryFn: async () => {
+    //hier der API-Call für die Daten
+    return mockNodeGroups;
+  },
+  refetchInterval: 1 * 1,
 });
 
 const searchEngine = computed(() => {
-  let minisearch = new MiniSearch({
-    fields: ["name", "description", "id"],
+  const minisearch = new MiniSearch({
+    fields: ["name", "groupId"], 
     searchOptions: {
       boost: { name: 2 },
       prefix: true,
     },
   });
-  let licenses: License[] = [];
-  data.value?.forEach((group) => {
-    group.licenses.forEach((license) => licenses.push(license));
-  });
-  console.log(licenses);
-  minisearch.addAll(licenses);
+
+  if (data.value) {
+    minisearch.addAll(data.value);
+  }
   return minisearch;
 });
 
 const searching = computed(() => search.value !== "");
 
 const visibleIds = computed(() => {
-  return searchEngine.value.search(search.value).map((searchResult) => {
-    return searchResult.id;
-  });
+  return searching.value ? searchEngine.value.search(search.value).map(result => result.groupId) : [];
 });
 
 provide(key, {
diff --git a/web/src/types.ts b/web/src/types.ts
index ed5d66a..5d8c61e 100644
--- a/web/src/types.ts
+++ b/web/src/types.ts
@@ -1,32 +1,22 @@
-export interface LicenseGroup {
-  id: string;
+export interface Node {
+  uuid: string;
   name: string;
-  licenses: License[];
+  status: number;
+  coordla: number;
+  coordlong: number;
+  temperature: number;
+  battery: number;
+  runtime: number;
 }
 
-export interface License {
+export interface NodeGroup {
+  groupId: string;
   name: string;
-  id: string;
-  start?: string;
-  end?: string;
-  key: string;
-  amount?: number;
-  note?: string;
-  group_id: string;
-}
-
-export interface CreateLicenseDto {
-  name: string;
-  start: Date | null;
-  end: Date | null;
-  key: string;
-  amount?: number;
-  group_id: string;
-  note?: string;
+  nodes: Node[];
 }
 
 export interface User {
-  id: string;
+  uuid: string;
   name: string;
   email: string;
   admin: boolean;
@@ -46,6 +36,3 @@ export interface UpdateUserDto {
   admin?: boolean;
 }
 
-export type CreateGroupDto = Omit<LicenseGroup, "id" | "licenses">;
-
-export type UpdateLicenseDto = Omit<License, "id">;