Cannot activate, reached its activation limit

I just got my Mac back from support and I had to reinstall everything. It says now:
"This license has reached its activation limit and can no longer be used to activate new product copies."

no way to fix this I've tried everything and https://kb.parallels.com/123461 seems outdated

 

Hello,
we've made some changes with your key, please restart your Parallels Desktop and check the issue.