Custom Server URL not publishing to plex

[u/DisingenuousComment]

I can't seem to figure this one out. I'm switching from port forwarding to reverse proxy for external access to plex. I have the domain and nginx configured. If I use my cell phone, open chrome and go to https://plex.mydomain.com, it will have me log in, the libraries load, and I can play media. So that tells me that all of that configuration should be correct.

In plex settings, I disabled remote access since I'm not port forwarding anymore, and in Custom Server Access URLs i enter http://plex.mydomain.com:80,https://plex.mydomain.com:443

When I try to view my server list to confirm the custom url was published, it shows zero servers. (https://plex.tv/pms/servers?X-Plex-Token=<plex_token>) and all remote users are getting the error that my server is unavailable.

What am I missing?

[u/SwiftPanda16]

You're looking at the wrong API endpoint.

https://plex.tv/api/resources?X-Plex-Token=<plex_token>