nexus renewal stuck, can't add global entry

US citizen here, I tried to renew my nexus membership about 5 years ago in the height of covid and could not get an appointment and eventually gave up trying. My application still shows as "conditionally approved". Today out of the blue I got an email saying "Congratulations on completing your interview with the Canada Border Services Agency (CBSA) for your NEXUS application. You now need to complete the interview portion with U.S. Customs and Border Protection (CBP) to finalize your enrollment to become a member."

I did not have a renewal interview with CBSA. This is weird. And there is no button on the ttp site to schedule an interview with CBP. I thought maybe I would just try switching to applying for global entry but that button to add other traveler programs is grayed out.

What should I do to get this fixed? Btw I just flew back from London to LAX a few days ago and went though the global entry line no problem.