I have been using the Spotify app in my workplace (personal use) behind a corporate proxy with the proxy settings set on the Settings page. However, the app stopped playing any music last week. Songs in my playlists appear grayed out and none of them can be played, and the blue top bar with error "No connection" is displayed. This started to happen with version 184.108.40.2069.g4109e645.
I uninstalled and reinstalled the app (version 220.127.116.111.gdb77255f), however I now can't log in (even if I set the proxy settings):
I have no issue with the app installed on my personal home computer as well as smartphone.
What could be the problem?
Please note that I am behind a corporate proxy and I cannot get the IT department to open any additional ports. There has been no change in our network configuration and the app was working earlier, probably 10 days ago or so.