Homematic no longer working

Hi, I have been using homematic binding for a long time, but since a while I can not use it anymore e.g. can not switch on/off items.

2020-08-08 09:51:20.635 [hingStatusInfoChangedEvent] - 'homematic:bridge:LEQ0115018' changed from INITIALIZING to ONLINE
...
2020-08-08 10:03:34.178 [ome.event.ItemCommandEvent] - Item 'StromschieneArbeitenKChe_2_State' received command ON
2020-08-08 10:03:34.186 [nt.ItemStatePredictedEvent] - StromschieneArbeitenKChe_2_State predicted to become NULL
...
2020-08-08 10:09:55.089 [vent.ItemStateChangedEvent] - EQ3HMCCU2App_DutyCycle changed from 14 to 15

2020-08-08 10:03:34.186 [nt.ItemStatePredictedEvent] - StromschieneArbeitenKChe_2_State predicted to become NULL

I ran an update via openhabian-config in the past and this might be the problem.
What I was wondering is that the things are shown as online.

In the past sometimes when the connection between openHab and Homematic was lost (and this was also shown in the things list) it helped to restart it, but seems as not for this behaviour.

Any idea where I could start debugging / find out the reason?

Yours, Michael

have you tried to switch your items via homematic ccu? does this still works?

Yes, this is still working.