Domain cannot be reached behind external NGINX proxy on CentOS 7.

[Andy-aus-M]

Domain cannot be reached behind external NGINX proxy on CentOS 7.
Domain from the Centos web server is forwarded by the proxy and the server can be reached via https.
NAT enabled for domains. 192.168.2.39
Domains forwarded via proxy to 192.168.2.39 (server NAT IP) but it doesn't work.
Reverse proxy works with domains on Synology and MAMP Pro (Windows and MacOS)
All required ports are released in the router for Centos IP.
CentOS only runs on Apache without NGINX

Who can help ?
Translated with Google