Hello there, eugenekharon.
I appreciate you for performing some troubleshooting steps to re-connect your PayPal account to QuickBooks.
Right now, there's an ongoing issue about PayPal connection. Our product engineers are investigating the cause of this unexpected behavior.
To help us resolve this matter, I’d recommend contacting our QuickBooks Online Support Team. This way, you'll be added to the list of affected users and get notified via email once a new update is received.
We appreciate your patience as we work through this. Let me know if there’s anything else you need. I’ll be here to help.