My dad has a Telstra TV, which is essentially a Roku. He's got the Emby app on it, but whenever he tries to log in it tells him his user name or password is incorrect, even though this isn't true. Removing the password allows login with no issues.
He also has a Samsung UA55J6200, and has installed the Emby app on that. When entering the address of my server he gets an error saying it can't connect to that server, check to see if it's running. The web browser app on the Samsung TV also returns a 'server not found' error upon entering my server's address.
He's able to connect fine from his phone and PC.
I'm behind an NGINX reverse proxy and Cloudflare.
I've attached a log which is reasonably lengthy, but starts with a login attempt on the Telstra TV. I'm assuming the attempted Samsung connections aren't even getting through far enough to be logged at all.