[Solved] The number of activation exceeded limit. After WebSite Reinstall

Hi Dear GVectors Team,

I reinstalled my website and messed up with the backups. I used my subdomain forum.koddunyam.net with wpforo but now I want to use the main domain as wpforo forum website. I reinstalled the Plugins Syntax Highlighting, myCred and Topic Prefix Addons. When I try my old keys I get the error : "The number of activation exceeded limit". Do I need to re use a sub-domain with the same name to use my Addons? Or can I somehow re activate the keys?