Hi @LisaLisa_B
If you were automatically logged in when you installed the app again, then yes, I would recommend manually signing out and then back in. This helps to create a fresh connection and resync with Pandora.
Once you're logged back in I recommend playing the Pandora app and leave it in the foreground on your iPhone when re-downloading your offline content. That's because iOS will automatically stop background activity from an app that isn't actively being used. This means if you start a download and leave the Pandora app you are more likely to experience problems with content not finishing the download process.
Let us know how it goes.
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