Same problem on my Onkyo TX-8270. I went to add a station on Pandora through the Onkyo app and then I got hit with an "Internal Server Error" and it has bricked the app on the stereo. Still nothing after a factory reset of the stereo. I am going to try a factory reset and then try logging in under a different account to see if the account is throwing an error to unit or the latest firmware update is the culprit.
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