I use the spotify client on linux mint 18, and I recently transitioned from premium to basic subscription (2 days ago). Everything worked fine before.
I start the client and listen to several songs, then an ad comes. The green progress bar is a tenth of a second from the end of the ad when it stops, and I can listen to no more music.
If I close and re-open the client, it tries and fails to run the ad, so no music.
If I reboot the computer and open the client, I can play 20-30 seconds of music before an ad tries to play but fails.
I'm missing something - any suggestions?