Are you using your domain name? What happens when you use your IP? I'm wondering if this is some weird DNS problem. I know that some devices try to override your DHCP defined DNS settings.
Jellyfin 10.10.7 (Docker)
Ubuntu 24.04.2 LTS w/HWE
Intel i3 12100
Intel Arc A380
OS drive - SK Hynix P41 1TB
Storage
4x WD Red Pro 6TB CMR in RAIDZ1