Is there any point using C4 with SkyQ? I'm about to remove SkyQ from the C4 system which has been a constant source of problems and use it on its own. SkyQ is reliable. unlike C4, and gives you very similar functionality without the hassle.
I have the same problem. It has worked normally until Sunday. Now it tells me to log in on the C4 panel, but doesn't actually log in to the Tidal account when you follow the link and enter user name and password.