Update to 783, Tidal no longer plays

I thought I posted this earlier, but it seems to have disappeared.

I updated to Roon build 783, and now Tidal will not play.

After the update to Roon build 783, my Tidal login works in Roon, but the tracks themselves do not play. I see an endless back and forth icon in the timebar at the bottom of the screen. (Looks like a cylon raider eye.) This continues for a few minutes or never stops. If it does stop, it says: “Nothing playing”

In addition, when trying to fix the issue I tried to configure my Roon Core, but the system does not find the Roon core. Which is weird, because it plays from my local library files.

Playing local library files works as normal.
Live Radio works fine.
Tidal login is fine.
Tidal playlists and favorites all available and appear normal; the tracks simply do not play.

Roon Core: macMini 2014 on OSX 10.13.6

I have rebooted the computer, modem/router, router, streaming hardware, all apps used control Roon, etc. Unplugged network cords, etc.

Help please!

A post was merged into an existing topic: Update to Roon 783, Tidal no longer plays