Hi Mark,
Having a membership or ownership of a forum on Forumotion does not mean you have an automatic matching Servimg account. You have to create one of those. Your username and password might be the same as the ones you use here (if that is what you choose to do), but you still have to specify them when you set up your Servimg account. Also, to log into Servimg, you need not a username by itself, but an e-mail address (whether or not the e-mail and account names are the same, it will need to be whatever @ whatever . whatever).
Hope this helps.