deactivating License TRADOS 2015

Hi Team, Just got a new laptop, I need to use my Studio 2015 licence on the new laptop. I can't deactivate my licence from my old laptop and reactivate it on the new one. I get the error : " An error has occurred with your offline-deactivation. If you continue to have problems, please Please log a support request." I dont have support agreement :-( Thank you in advance

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