Question

I can find no info on where to locate the product key...logged a service request only to be emailed Studio One is no longer supported, all I want is to find my product key to activate the software...fairly simple question I thought

Answer 1

Usually included in the packaging, or is listed in your my.presonus.com account.

Follow this tutorial to find your Studio One key (regardless of which version you have registered at anytime) in your account. 

http://support.presonus.com/entries/21879320--2-Software-Install