The technician notifications (= the bell) suddenly stopped working. For example, when there is a requester reply, the envelope in the request overview turns red, but there is no notification behind the bell. This happens in production (build 9011) but not in test (build 9016). I compared the DYNAMICNOTIFICATIONS parameters in the globalconfig table but the values are the same for both systems:

What else can I check? What is causing this issue?

Best regards,
Demetrius