Roon stopped playing Tidal music

Since the current version of Roon was installed, I’ve had a problem playing music from Tidal. At first the pauses between cuts grew longer and longer. This afternoon Roon just stopped playing anything from Tidal. It shows me all the albums, and allows me to select tracks. The bar under the play/pause buttons flashes back and forth but the music never starts.

Roon radio still works. I can play albums that are on my NAS. I can play Tidal albums to the dCS Bartók DAC through the dCS software. I just can’t play them through Roon.