I purchased my Acrobat Standard some time ago. I wanted to see what DC is about. So I subscribed the trial version. But after the 30 day trail was over, my license of Acrobat Standard is gone and says, "Trial is over." Where is my license?

Where is my license?  I purchased my Acrobat Standard some time ago.  I wanted to see what DC is about.  So I subscribed the trial version.  But after the 30 day trail was over, my license of Acrobat Standard is gone and says, "Trial is over."  Where is my license?