OK. Sorry for the question, but another answer could have been that you have activated the thing too many times. The way around that is to deactivate it on one PC and then to use the same credential for another PC. Of course, the "two" PCs can be the same thing.
Have you contacted the support people directly? They'll answer that sort of question even if you don't have a support contract.
Have you contacted the support people directly? They'll answer that sort of question even if you don't have a support contract.