Cannot migrate Parallels Desktop 10 license

I migrated to a new Mac. Upon starting up Parallels desktop 10, it says my product activation key reached its activation limit. I found the KB article for how to deactivate my old computer, but the instructions don't appear to apply to Desktop 10. How do I proceed?

 

Hi, we've reset your license please check the issue.

 

Thanks for your help -- still getting rejected unfortunately. Please see attached.

 

Hello, please try to restart your Parallels Desktop and check the issue.