I have two licence keys for the no logo version of Bizagi. I have upgraded both computers and and seem to have lost both activation. How can I proceed?

I have two licence keys for the no logo version of Bizagi. I have upgraded both computers and and seem to have lost both activation. I tried using the activation keys and am told that no more activations are allowed. I have gone to the portal and there is no way to move or transfer the licenses. I have sent emails to sales@bizagi.com but no one has responded. I would appreciate some response. Thank you.