I have a current and valid subscription for my laptop and yet it will not work for me? Do I need to register with a serial number? and is it limited to one PC in my household?
Acrobat can be installed on 2 computers however it can be activated only on one computer at a particular time.
You have the subscription so you won't require a serial key, it will get activated using the Adobe ID once you Sign In.
Now exactly let me know the issue, are you trying to activate Acrobat on your second system?
Whats the exact error message or error code that you are receiving?