"Connecting to local server..." Loop with Nginx Proxy Manager and HTTPS

I'm having an issue connecting to the server over an Reverse Proxy (Nginx Proxy Manager). I added the var "REVERSEPROXY=true", but I still get the invite loading screen. If I connect over the IP, the loading screen does not appears.

Image: sha256:7effa1ab6f107d1f103d9979fb9648fcd7d1234723dec8396652eeae99a9e003

I don't know if it's a problem from Nginx or Deemixer.

UPDATE: Apparently, you can use Deemix when you block the Loading circle with Ublock Origin. Deemix works kinda.