Android apps can't connect on my server

[Catter]

i think i have a similar problem.

i use jellyfin behind nginx.
my tld points to my server and nginx forwards it to jellyfin on the correct port.
this setup works fine on ios, appletv and in the browser. but android fails to connect.
i have no idea what i'm doing wrong. i use a let's encrypt cert for the server which is valid and only a few days old.

my nginx config looks like this:

Code:

worker_processes  1;
events {
    worker_connections  1024;
}
http {
    include  mime.types;
    default_type  application/octet-stream;
    sendfile  on;
    keepalive_timeout  65;
    server {
        listen 443 ssl;
        server_name  MY.TLD;
        ssl_certificate  ../ssl/MY.TLD-crt.pem;
        ssl_certificate_key  ../ssl/MY.TLD-key.pem;
        ssl_session_timeout  5m;
        location / {
            proxy_pass  http://localhost:8096/;
        }
    }
}

i don't have a lot of experience with nginx. maybe someone can point me in the right direction.
thx!