Pandora TV app isn't loading anymore

We've got one TV box that was running the Pandora app. It went dark and then afterwards said we needed to log in. We did that, but now it only displays the top menu line (Now Playing, My Collection, Browse, etc.) and never loads anything to play. Additionally, we can't actually interact with the menu to move around and try to select a station. We've unplugged the box and restarted it a couple times and exited and re-entered the app several times before and after the reboots, but nothing's working. This pretty well exhausts all the options given by the automated AI chatbot, so I was hoping someone from tech support might see this and get us rolling again.