can't move key to new Mac

Dear whomever it may concern,

I'm been trying to move my license to my new Mac but am being told that the maximum limit has been reached, that I can't activate the key, and that I should perhaps buy a new license. This is pretty weird considering that I'm using a subscription based key. I've tried following the parallel page article for moving licenses to a different machine but the instructions have not helped at all. I have no access to my old computer and was wondering if there's a way to deactivate the key from the old machine so that I can activate it on my new one?

 

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