diff --git a/src/app/graphql.module.ts b/src/app/graphql.module.ts
index fd2d0f5..9b7ae36 100644
--- a/src/app/graphql.module.ts
+++ b/src/app/graphql.module.ts
@@ -13,18 +13,6 @@ import { DefaultOptions } from '@apollo/client/core/ApolloClient';
 
 const uri = environment.apiUrl + '/graphql'; // <-- add the URL of the GraphQL server here
 
-const authMiddleware = new ApolloLink((operation, forward) => {
-  //Add token here TODO: use AuthService to get the Token
-  operation.setContext({
-    headers: {
-      authorization: localStorage.getItem('requestToken') || null,
-    }
-  });
-  return forward(operation).map((data) => {
-    return data;
-  });
-});
-
 const defaultOptions: DefaultOptions = {
   watchQuery: {
     fetchPolicy: 'no-cache',
@@ -38,7 +26,7 @@ const defaultOptions: DefaultOptions = {
 
 export function createApollo(httpLink: HttpLink): ApolloClientOptions<any> {
   return {
-    link: concat(authMiddleware, httpLink.create({ uri })),
+    link: httpLink.create({ uri }),
     cache: new InMemoryCache({}),
     defaultOptions: defaultOptions,
   };
diff --git a/src/app/helper/token.interceptor.ts b/src/app/helper/token.interceptor.ts
index 693ca02..f6bbe2e 100644
--- a/src/app/helper/token.interceptor.ts
+++ b/src/app/helper/token.interceptor.ts
@@ -8,7 +8,7 @@ import { catchError, filter, take, switchMap } from 'rxjs/operators';
 export class TokenInterceptor implements HttpInterceptor {
 
   private isRefreshing = false;
-  private refreshTokenSubject: BehaviorSubject<any> = new BehaviorSubject<any>(null);
+  private requestTokenSubject: BehaviorSubject<any> = new BehaviorSubject<any>(null);
 
   constructor(public authService: AuthService) { }
 
@@ -20,7 +20,6 @@ export class TokenInterceptor implements HttpInterceptor {
 
     return next.handle(request).pipe(catchError(error => {
       if (error instanceof HttpErrorResponse && error.status === 401) {
-        console.log("catching error");
         return this.handle401Error(request, next);
       } else {
         return throwError(error);
@@ -39,17 +38,17 @@ export class TokenInterceptor implements HttpInterceptor {
   private handle401Error(request: HttpRequest<any>, next: HttpHandler) {
     if (!this.isRefreshing) {
       this.isRefreshing = true;
-      this.refreshTokenSubject.next(null);
+      this.requestTokenSubject.next(null);
 
       return this.authService.refreshToken().pipe(
         switchMap((token: any) => {
           this.isRefreshing = false;
-          this.refreshTokenSubject.next(token.jwt);
-          return next.handle(this.addToken(request, token.jwt));
+          this.requestTokenSubject.next(token.request_token);
+          return next.handle(this.addToken(request, token.request_token));
         }));
 
     } else {
-      return this.refreshTokenSubject.pipe(
+      return this.requestTokenSubject.pipe(
         filter(token => token != null),
         take(1),
         switchMap(jwt => {
diff --git a/src/app/pages/tables/bikes/bikes.component.html b/src/app/pages/tables/bikes/bikes.component.html
index cf30a16..eac2a82 100644
--- a/src/app/pages/tables/bikes/bikes.component.html
+++ b/src/app/pages/tables/bikes/bikes.component.html
@@ -9,10 +9,17 @@
       matTooltip="Tabllendaten aktualisieren. Achtung! Alle ungespeicherten Änderungen gehen verloren."
       (click)="reloadTable()"
       [disabled]="reloadingTable"
-      i18n
     >
       <mat-icon class="spin">sync</mat-icon>
     </button>
+    <button
+      mat-raised-button
+      class="table-control-button"
+      (click)="addEmptyRow()"
+      [disabled]="reloadingTable"
+    >
+      <mat-icon class="spin">add</mat-icon>
+    </button>
     <mat-form-field>
       <mat-label>Filter</mat-label>
       <input
@@ -23,7 +30,7 @@
       />
     </mat-form-field>
     <mat-paginator
-      [pageSizeOptions]="[25, 30, 50, 100, 500]"
+      [pageSizeOptions]="[15, 25, 30, 50, 100, 500]"
       showFirstLastButtons
     ></mat-paginator>
   </div>
@@ -60,6 +67,7 @@
         </td>
       </ng-container>
 
+
       <!-- Other Columns -->
       <ng-container
         *ngFor="let column of columnInfo"
@@ -72,8 +80,8 @@
         </th>
         <td mat-cell *matCellDef="let element">
           <app-cell
-            *ngIf="!column.readonly && element.isLockedByMe; else stringValue"
-            [editable]="true"
+          *ngIf="column.type === 'Boolean' || (element.newObject || !column.readonly && element.isLockedByMe); else stringValue"
+            [editable]="element.newObject || !column.readonly && element.isLockedByMe"
             [(value)]="element[column.name]"
             [inputType]="column.type"
           ></app-cell>
@@ -85,7 +93,7 @@
       <ng-container matColumnDef="buttons" stickyEnd>
         <th mat-header-cell *matHeaderCellDef></th>
         <td mat-cell *matCellDef="let element">
-          <div class="button-wrapper">
+          <div class="button-wrapper" *ngIf="!element.newObject">
             <button
               mat-icon-button
               (click)="edit(element)"
diff --git a/src/app/services/auth.service.ts b/src/app/services/auth.service.ts
index 292de6b..6878b02 100644
--- a/src/app/services/auth.service.ts
+++ b/src/app/services/auth.service.ts
@@ -1,8 +1,8 @@
 import { Injectable } from '@angular/core';
 import { HttpClient } from '@angular/common/http';
-import { finalize, map, tap } from 'rxjs/operators';
+import { catchError, finalize, map, tap } from 'rxjs/operators';
 import { environment } from '../../environments/environment';
-import { BehaviorSubject } from 'rxjs';
+import { BehaviorSubject, of } from 'rxjs';
 
 @Injectable({
   providedIn: 'root',
@@ -44,23 +44,37 @@ export class AuthService {
   logout() {
     // remove token from local storage to log user out
     return this.http
-      .post<any>(`${environment.authUrl}/logout`, { request_token: this.getRequestToken() }).pipe(finalize(() => {
-        this.removeTokens();
-        this.checkIfUserIsLoggedIn();
-      }
-      ));
+      .post<any>(`${environment.authUrl}/logout`, {
+        request_token: this.getRequestToken(),
+      })
+      .pipe(
+        finalize(() => {
+          this.removeTokens();
+          this.checkIfUserIsLoggedIn();
+        })
+      );
   }
 
   refreshToken() {
-    return this.http.post<any>(`${environment.authUrl}/new-token`, {
-      'refresh_token': this.getRefreshToken()
-    }).pipe(tap((tokens: any) => {
-      this.storeTokens(tokens);
-    }));
-  }
-
-  private storeRequestToken(jwt: string) {
-    localStorage.setItem(this.REQUEST_TOKEN, jwt);
+    return this.http
+      .post<any>(`${environment.authUrl}/new-token`, {
+        refresh_token: this.getRefreshToken(),
+      })
+      .pipe(
+        tap((tokens: any) => {
+          this.storeTokens(tokens);
+        })
+      )
+      .pipe(
+        catchError((error: any) => {
+          if (error.status === 400) {
+            this.removeTokens();
+            this.checkIfUserIsLoggedIn();
+            location.replace('/login');
+          }
+          return of();
+        })
+      );
   }
 
   private storeTokens(tokens: any) {
@@ -72,6 +86,4 @@ export class AuthService {
     localStorage.removeItem(this.REQUEST_TOKEN);
     localStorage.removeItem(this.REFRESH_TOKEN);
   }
-
-
 }