I am having the same issues as well. Duplicate server in the list and the inability to access the server via app.plex.tv with “403 Forbidden” errors in the logs. When I add ?secure=0 to the URL, the server becomes visible. The server is also visible on the iOS and AndroidTV app, the issue is only with the webapp.
The same issue is also being reported here by multiple users: Cannot access server from plex.tv
