Hello,
QNAP has removed the version 1.10.0.3291 from the downloadserver.
There is now the version 1.9.2.3163
(Only for Intel-NAS)
https://download.qnap.com/QPKG/NotificationCenter_1.9.2.3163_20250822_x86_64.zip
For other NAS
That is the fix from QNAP.