Tidal: Does not load albums

QNAP473, Moon680d, Moon600v2

I cannot not load albums from Tidal any more with Roon, though it’s now working with Mind2, a Moom680d application.

It’s all started yesterday. With Tidal not working on Roon, I’ve tried with Mind2. First, Mind2 responded that the Tidal server was not responding. Second, I closed Mind2, waited half an hour and, third, got back to Mind2. It worked. I’ve opened Roon, hoping the problem was solved. It wasn’t, and I cannot load any album from Tidal on Roon.

Added: Roon Live Radio is working and I have access to my own albums located on the Qnap.