I moved your post to a separate thread to keep everything organized.
First, I would recommend clearing the app data to see if that helps resolve the error message you're encountering. You can find those steps below and here: Android Troubleshooting
From your Android Settings, please try clearing the Pandora app data using the following steps (not to worry, we'll keep track of your profile and collection for you):*
Open your device Settings
Scroll down to find Pandora
On the storage details page tap Clear Data.
Keep in mind that the steps for each Android device is slightly different. If you have a Pixel, you can check out Google's help page forsteps on how to clear spaceon your device.
Please note that you will be asked to log into your account after completing these steps.
*Pandora Premium and Premium Family listeners may need to re-download some of their offline content after this. Pandora Plus users, however, should receive that offline content again automatically. If you have any trouble with your offline stations after this, please let us know.
If the issue persists, I'll need the following details to report.
Android version (Settings > About Phone):
If you can open Pandora, go toProfile,then selectSettings. Scroll to the bottom of the screen for the version number.
If you can't open Pandora: from Android Home screen > Android Settings > Applications > Manage Applications > Find Pandora