[Observium] APP Polling on port 36602 stopped

Hello

Since 2 days the APP polling at port 36602 doesn't work anymore. No device is working. I tried to telneting the target over cli and it gaves answer on 36602. Tcpdumping on a target there are not requests coming from observium.

We are using Revision 23.7.12902.

Does anyone else having also some troubles?

Regards Walter