Do you have the original emails from Surpass on the OC10 account setup? It should be there. Another good reason folks to save those emails.
Also are you trying to setup the upgrade from OC10 to VPS on the same account? You don't want to do that. You want to setup a VPS new account and after it is up have Surpass move the OC10 data over to the VPS. After you confirm all is good then cancel the OC10 account.
I just did this in May upgrading from a OC5.