Activation limit reached for Acrobat X standard

I bought Acrobat X standard in few years ago and wanted to install in my new laptop now.

However, the system show "Activation limit reached for Acrobat X standard".

Actually, all the old laptops are threw away or distoryed. It is impossible to deactivate the software.

And I also forget to setup the account in Acorbat or not when I bought the software.

Would you advise how to check and solve this problem?

I need this software for working urgently.

Many thanks.