Error using Caddy/ reverse proxy

[hellermyotomy]

Are you using a wildcard cert?  If not, does your cert include jellyfin?

Normally I don’t do anything else apart from point the domain name towards my IP and then add the above text to my Caddyfile and everything works. It’s only Jellyfin that won’t work and just gives a blank screen. Jellyfin is also reachable via ip:port so I’m not sure if it’s something within Jellyfin settings that I need to amend. Remote server is enabled.