Deactivation license 2017

I need to deactivate both licenses. Both my computers were stolen. I have new ones but I cannot deactivate one of the licenses.

I only could reset one of them

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Do you think you can help me?

When I clik on "Can't deactivate online? – Deactivate offline" I was sent a ticket and then the process failed. I need to solve the problem as soon as possible.

Thanks!