Deactivation Issues with Lightroom 6

My computer recently had a hard-drive failure, requiring me to re-install Adobe Lightroom 6 after replacing the hard drive.  After I launch the software, it says that I have reached the maximum activation count for my serial number and to deactivate the software on the other device first.  This is not possible, since the old computer no longer exists due to the hard drive failure.  In my Adobe account, it does not show any activated devices, so I don't see any way to resolve the issue.  I cannot find a way to contact Adobe support to get someone to help me fix the issue.