This is not a PayPal issue. And I've noticed that this is the stock answer for any PayPal related problems in QBO - "It must be PayPal's fault." Well, it's not.

I made a $5000 withdrawal from Paypal. Simple. For two years, QBO correctly imported that number as -5,000. But today, it imports it as +5,000. I can tell you with certainty that $5,000 has been deducted from my PayPal balance. So why would QBO be saying that $5,000 was added? This is an importing error, and it needs to be fixed.

Accounting software really should not mix up plusses and minuses. That's pretty basic stuff.