Acrobat XI not activated!

My first post here and I'm not a high end user so please be patient with my ignorance    

I've seen previous threads on this issue in various places, but don't think solutions in these will work for me.

I have had Acrobat XI for about 5 months now.  All was working fine.

THis morning when I tried to print: Message popup says Acrobat is not activated.

So I reinstalled.

and it works

BUT

It now says I am using a trial version.  WTH?  I PAID for this!.  I am in a large company and have a stand-alone version installed.

SO what now??

Ron