Thank You All for all the suggestions, really appreciate it
I'll definitely call PayPal, that seems to be the way.
Meanwhile paxum replied too, it is funny:
"The account you mentioned was already flagged and it will be kept under observation"
WUT? Observation?
Why can't they auto-reverse all his transactions? Do they have a limit and fuck around with scammers only if they do more than 5/10 scams a week/month/year?
LOL
It can be that the ransomware infection is connected with these issues, I have no idea, never been in such a situation.
Frankly, we [my crew of 4] are not using any anti-virus/anti-spyware whatsoever .. never had issues..