I get a bit annoyed when people in a pirating sub don't help you with your pirating issue and just try to redirect you, but here I go anway. Adobe has changed something recently as I also had my acrobat shut down after a year or more of successful use. I looked for a FOSS alternative and discovered Stirling. It's too soon for me to sing any praises yet, but so far I've been able to do with it what I need and I think it has the potential to match or even exceed the capabilities I had with acrobat.