I have this problem too. Even my library has no Tidal albums, they are all gone OMG! Did Tidal block Roon, should we all move to Quo uz? I will do that but please restore my library!
Thanks, that helped!
After this occurrence I am a bit shocked that my library is partly at Tidal and Roon after all these years still hasn’t fixed anything about that (disappearing albums and so on).
So I still have to make screenpics of my library.
Besides this I am still very happy with Roon by the way!!