I have the same problem.
I bought yesterday, sunday 30 september the code by credit card and the code was sent to me but the the softwarer doesn't aceept it.
I use the release 3.98 (5104). I could send my order number if it is needed.
What's wrong in all it?
What could I do?
I need to recover some files, this the reason why I spent 81,4 euro (not dollars)
thanks
dott. prof. Pietro Rapisarda