Reactivate my Adobe Acrobat 8 Professional

I have had Adobe Acrobat 8 Professional for many years and it has worked well for me at my small office. I bought the CD. Because of my travels, and because i did not think it important, i had never registered it with Adobe. Last week, Adobe de-activated my software and i can no longer use it. I have the Serial number and activation number but since adobe have stopped Telephone re-activation, i cannot seem to find anywhere where i can re-activate my software program. Please help!