title: Sharepoint online app installation error
body: <p>I am working on SharePoint add-in. All works fine but few days ago I have got this kind of error/warning "Your tenant administrator has to approve this app." It happen when app deployed and you have to choose "Trust It" or "Cancel". Trust button is not active. Also I have tenant admin rights.</p>
  
  <p>Here is a pace of AppManifest file.</p>
  
  <pre><code>&lt;AppPermissionRequests AllowAppOnlyPolicy="true"&gt;
      &lt;AppPermissionRequest Scope="http://sharepoint/content/tenant" Right="FullControl" /&gt;
    &lt;/AppPermissionRequests&gt;
  </code></pre>
  
  <p>Maybe I need to set rights somewhere else to solve this problem?</p>