Hello Edmund,
did you work through al the headlines, which come into question at
http://helpx.adobe.com/x-productkb/policy-pricing/activation-deactivation-products.html>>> Deactivation or sign-out problems >>> I cannot access my previous computer >>> Have your serial number or Adobe ID ready, and then contact us. >>> or better (I quote from Preran: The chat button is activated as soon as there is an agent available to help.)
Hans-Günter