Download | Jellyfin Qnap Fix

In the App Center, click the Install Manually (plus icon) in the top right.

Open App Center , click the Settings (cog icon) , and check "Allow installation of applications without a valid digital signature" . jellyfin qnap download

Since Jellyfin is not in the official QNAP App Store, you must download the installer from trusted community sources: In the App Center, click the Install Manually