I have just purchased a new MacBook Pro and am trying to activate parallels toolbox on my new device. When prompted to deactivate my account on the old MacBook and activate the account on this MacBook I say yes. It then says that I cannot do that because I have reached a registration limit. I am not trying to add an additional device to the registration, just change from the old MacBook to the new one. I no longer have the old laptop in my possession. Please help.