I appreciate your patience here while I had a chance to discuss your case with the senior technical team. Unfortunately it appears that you are running into a bug here.
It’s difficult to say just yet if this bug is stemming from Roon or from TIDAL, but there previously was an artist object on your TIDAL account and this is preventing a proper sync or the TIDAL -> Favorites section to load properly.
We’ve passed a ticket to our development team and they’re going to work on getting this fixed. There are no exact timelines that I can provide, but I have made the dev team aware of your report and it has been added to the development queue. Unfortunately, until this is fixed, TIDAL syncing and favorites being displayed for your current TIDAL account is not possible.
Once again, apologies for any frustrations while we investigate and address this behavior on the dev side of things and once there is a new Roon release that addresses this, we will be sure to follow up with you.
Any questions, just let me know. Thank you!