i fixed it. it so stupid. when i added the proxy host for the domain, inserted wildcard certtificate etc... it couldnt resolve the domain better said the service. i turned „Block Common Exploits“ on and it worked. i dont know why chatgpt said this:
The “Block Common Exploits” option in NGINX Proxy Manager enables a set of security rules and headers that protect against common web attacks. It helps by:
Blocking suspicious or malformed requests
Enforcing stricter HTTP headers (like Content Security Policy, X-Frame-Options)
Preventing potentially harmful request patterns
Ensuring proper handling of HTTP headers and redirects
Enabling this option makes the proxy behave more securely and consistently, which often fixes weird issues with web apps behind the proxy—especially those using authentication or custom headers.
took 2 days of troubleshooting for this...i cant anymore