Hi jason,
just use the direct link to PAM: https://service.sap.com/sap/support/pam
SSO is working fine if you installed a valid certificate. Therefore just click in the new SMP at your profile (click on your name) in the right upper corner. Afterwards you should see 'Get a browser certificate (SAP Passport)'. Install it and you will be happy without login credentials whatever you hit for a server on the farm.
Regards,
Jens