Papers keep ending up in Trashed Folder

Hi there! I’m having a problem where papers keep ending up in the Trashed Folder. I’m afraid the problem goes so far back and I’m not at all clear on all the things I may have done that have led to this point, but here’s an example:

When starred, doesn’t sync to Starred Papers folder.
When viewed in Google Drive, is in “Trashed Papers” folder.
Is NOT in Paperpile Trash
How can I restore it so that it syncs properly when Starred and is in the appropriate folder (in this case, “I”) rather than in Trashed Papers?

I have been using Xodo on Android along with Google Drive Sync from the Starred Papers folder to download papers to my tablet, annotate them, and sync them back.

Thanks for any help you can offer!