You will need to contact Activation Support:
Click the Contact Us link at the end of the page and talk with a live agent who would resolve it ASAP.
You apparently have already two machines that need deactivating.
Unfortunately, only Adobe customer service can assist you with your issue. These are user forums; you are not addressing Adobe here.
Click on the link below, and after that click on "Still need Help? Contact us."
Then on the next page, click Chat
There is also a phone option.
That's what I did first. The chat person couldn't fix it and blamed it on a "Technical Issue" and told me to post here, even though I insisted I did not believe it was a technical issue, but an activation issue. I will try again.
I put in all the information for another chat session (phone is not apparently an option for me) and of course it comes up with "Chat is currently unavailable".
Thanks for the info, I will ensure someone from tech support follows up with you