Parallels upgrade not working

I recently bough an upgrade license for paralles since the parallel 13.2 wouldnt let me use my old key . After the purchase when i tried to enter the upgrade key it told me to confirm the old key which resulted in the message "Unable to activate Parallels Desktop,The product key of a previous version of Parallels Desktop has been not accepted on the license server"

 

Hello PichayaS, Please check our private conversation.

 

Any updates? No one seems to be aswering my conversation anymore...