My Adobe account won't let me activate Acobat XI Pro, even after deactivating all activations!

Help Please!  😞 

So I am having problems trying to activate (& reactivate) my own (old) copy of Adobe Acrobat XI Pro.
1. I have have this software for years. It has never failed me. I have moved it to new machines in the past without issue (even last year!).
2. Now, I re-downloaded it from my account, tried to put it on our new home computer, but account message said I needed to deactive another machine.  No problem. I have two activations now for this software (my old HP desktop & my MS Surface Pro.) I actually deactivated it from BOTH by mistake.
3. However, now I can't activate the program on eithe my new computer or my old desktop!

   -even though I have ZERO activations!!(?). When trying I get the same error message: "The serial number xxxxxxxxxxxxxxxxxxxxxxxx is already in use by the maximum allowed computers. You need to deactivate another computer within 21 days to use this product."
4. My account now shows that it is not/not in use and I have NO/NO activations for my copy of Adobe Acrobat XI PRo. . . yet Adobe website won't let me activate it!  This can't be correct!

Can you please help me with this?
5. What I need as an outcome:
#1) I plan to activate this AA XI Pro on our new desktop (a new HP desktop named "xxx-XX-Desktop").
#2) I plan to reactivate AA XI Pro on my old HP desktop (where AA XI PRo was/is installed/activated until about an hour ago!)
#3) I DO NOT PLAN to reactivate my Acrobat XI Pro on my Surface Pro 7. Our new desktop will fill that role going forward.

SO I will have still or again have only the two activations, that seems to be the limit. (and which had been working great for years!)

6. Trying this myself did not work - I have removed/reinstalled AA XI PRo on the new machine -rebooted it. On ling, my account now shows NO activations for this product --and yet I get the activation warning/error message. 😞

I am stuck! Thank you in advance

Mark

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