I have been using the Sonos 1 app for over ten years on my Android phones. I have been quite happy.
Recently I selected Pandora (it's been authorized for years) on the Sonos App. A screen appeared instructing me to "reauthorize Pandora." I followed the instructions and was informed the account had been reauthorized. However, when I attempted to post Pandora I received the same message to reauthorize Pandora. Multiple attempts yeielded the same result.
Steps. Taken:
1.Removed the Pandora service from Sonos and attempted to add it again - same problem.
2. Uninstalled and reinstalled Sonos on my phone and then tried to add the Pandora service - same problem.
3. Checked my Pandora Premium account - no issues. Everything works fine when I use Pandora as a stand alone app.