The serial number is the same as the number you inserted into the first registration window you saw when you started to install this software, the email with my ID number and registration code said – “(This code is also necessary to activate FOCUS projects 3 professional)”.
@Jimmie B – the email with the registration number from Franzis can take a while to get to you.
@Miri – When I unzipped the downloaded file there was a PDF file that explains how to install the P/S plug-ins, they only work with the more recent versions of P/S.