What version of Premiere Elements and what computer operating system is involved?
Adobe is the only one who can sort out program activation issue. And, this is not Adobe. Rather user to user.
Please try to contact Adobe Chat for help on this by clicking on the following link
Adobe ID, Signing In
Adobe ID, Sign In, Account Help
If the link does not hold its set, you will need to navigate to the Chat Panel using the titles given above as guides.