FiveM Proxy Manager issue

[AncientVipers]

Hello all,

I have an issue regarding FiveM in combination with NGINX Reverse proxy manager.
Everything has been setup perfectly fine, but fivem gives me a CURL 7 error while trying to join with the domain or public ip address
of the reverse proxy

The reverse proxy has 2 streams, 1x 30120 and 1x 40120. which redirects to my public ip where the server is hosted.
The router has been perfectly configured as far as i know.

Portforward --> 30120 & 40120 ---> IP of internal server ---> Firewall off on server --> FIVEM

let me know!