Chances are that no fellow user here on the forum is going to be able to help you.
You really need to contact Adobe Customer Support for activation issues.
Some people - and I'm not saying this has necessarily happened to you - have been bitten by scams where they bought counterfeit software and originally got bogus serial numbers which worked at the time, but have since been blacklisted by Adobe. I sincerely hope this is not what happened to you.
Good luck with Adobe Customer Support. I've always found them helpful with regard to activation issues.
-Noel