Cannot activate the license

Hi, 

I am trying to activate my product in a new device, I followed the instructions to deactivate it in the old device and activate it in the new, I am getting an error message, please help.

Note: My license is for 2 devices, while I want to keep it in one device, I need to deactivate it on the second device to activate it in the new purchased device.
Attached is the error message I am receiving.
Ali
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