I'm going to pile on here - I have a Sony Bravia Android TV with the same problem: greyish, blank screen for about a minute then returns to the home screen. An interesting thing is that the app has been working perfectly for nearly two years until just a few days ago. Was there an app update that torpedoed its operation on Sony Android TVs, or a Sony TV software update I'm not aware of? I've tried all the possible solutions mentioned above, most of them several times, with no success. Pandora works fine on all my other devices - phone, tablet, PC.
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