I have been using the WiiM Ultra for some time now. It used to work on all three of my devices, now I get the same login error reported above. I have a Premium Family Plan on Pandora, so it should work. I also jumped thru hoops getting my Spotify to work again but after three hours, I was able to get that running by resetting all my devices and reinstalling the app. Not Fun.
Please advise on the issue with Pandora so that I can get this running. This is why I bought my WiiM Ultra devices. Works on browser, iPhone etc. just not on the WiiMs even after the factory reset, network reset and other steps I took to resolve the parallel Spotify issue