As of April 29th, the Third-Party Referral Portal (TPRP) has been decommissioned and replaced with the Enhanced Referral Portal. Everyone with access previously and impacted by this change should have been transitioned to the new portal over the last several weeks. You can access the new portal at:
https://ocm-portal.optum.com/login
If you still require assistance, please contact Cortney Houdek (cortney.houdek@optum.com) & Megan Dunham (megan.dunham@optum.com).