after hardware upgrade, adobe is asking for license again

I think you'll find that they can and will do this. I don't say this is a good thing. If you now get "the license has been used too many times" you need to contact Adobe Customer Service and ask for an "Activation Count Reset". There is no way to reset it yourself. Warning, scammers may contact you privately pretending to be Adobe staff. Adobe will never send you a private message asking you to email an account that isn't @17309390, or use Skype. Adobe never ask you for their password. These scammers want your Adobe info, credit cards, your money and control of your computer, please take care.

Of course there is a problem doing that! We paid for a license and no company has the right to keep making feel customers as we are criminals trying to steal! If they are not able to find an algorithm that verifies that it's the same piece of software used by the same user, that is their problem. They can't be demanding authentication over and over, and taking away the software we already paid for if we don't! "The license has been used too many times", really?