I was doing another test and for that i set the current date on my system to 2 months ahead.
I should have set it back but it so happened that during that time before i could set the date back i think i opened acrobat and it saw the altered date and locked it.
Later I changed my date to current date, but acrobat showed the trial period as over. Is there a way to let acrobat know that I still have days on the trial and that is should not be over?