I have migrated my Paperpile account from one Google account to another. Now I constantly lose connection to my Paperpile account (typically in under 5 minutes) with error messages such as "Whoops — could not access your Paperpile library. You may be logged out."
Although frequent, I have yet to determine what triggers the problem, but I assume it is somehow caused by the fact that I now have two Paperpile accounts?
I have synched Chrome to the new (i.e. primary) Google Account, to try and avoid losing connection, but this has not resolved the problem.