Jellyfin WebOS

[Host-in-the-Shell]

Hey there, Anne. Welcome to the forums.

It would be very helpful for us if you could describe your installation method, and particular distribution of Linux used to host Jellyfin at. That said, this sounds to me like a firewall issue. As suggested by the documentation, you want to make sure you are correctly forwarding the ports that Jellyfin uses, and to configure your firewall accordingly so it can provide access to said ports for other devices.
Using ufw as an example:

Code:

sudo ufw allow 8096/tcp
sudo ufw allow 8920/tcp
sudo ufw allow 1900/udp
sudo ufw allow 7359/udp

You can verify if the rules were added with

Code:

sudo ufw status