I am also having this issue. I am on an 8th Gen iPad, iOS 14.6, T-Mobile, Pandora version 2106.1. I have uninstalled and reinstalled the Pandora app, which has not resolved the issue. I normally stay on Wi-Fi, but I have tried disconnecting the Wi-Fi and using mobile data, and the problem has happened in that configuration as well. My symptoms are as reported - blue Now Playing screen with no album image, zero time, and no progress to another song. The button bar (thumb - replay - pause - skip - thumb) is unresponsive. However, in my case, swiping the app away from the double-click card view and then reopening it will solve the problem (until it happens again) - I do not have to restart the whole device.
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