On January 12, 2015 I purchased and downloaded online, Adobe Acrobat XI Standard. I have just had my computer re[aired, losing everything on it in the process. I need to re-download Acrobat. How can I do this now?

On January 12, 2015, I purchased and downloaded online, Adobe Acrobat XI Standard. I have just had my computer repaired, losing everything on it during the process. I need to re-download Acrobat. I was informed, when I purchased it, that if need be, I would be able to re-download acrobat if needed.  How can I do this?