Problem Spotify Connect plugin, can't stream

Hi all,
sadly since one week I can’t stream from my iPhone or Mac to Volume via the Spotify Connect 2 plugin, I can see the device but it is greyed out and it is written underneath “playback restricted”. However my wife can still stream from here iPhone.
I updated Volume to the current version, deleted and reinstalled the plugin and the Spotify app on my phone but neither brought a solution.
Following you can see my log file:

Hope you can help me, it is really annoying.

Same problem, can not play from Linux, Android or Windows 10.

Really strange. Since when do you have this problem?

Since this morning, worked yesterday afternoon.