OH3 HMIP Gateway Extras - not updating

Hi there,

with having finished my upgrade from OH2.5 to OH3 there is only one thing missing.
I have a system variable in CCU3/Homematic defined that is actually a switch. This switch was used to be controlled by the epaper switch HmIP-WRCD and a rule in openhab.
After a couple of restarts, updates on both sides (ccu3, OH3), deleting the gateway-extras thing and item my issues are still there.
When pressing the physical button, the epaper display reacts accordingly and shows the new status.
In openhab however, I receive errors:

2021-11-10 16:14:07.415 [WARN ] [ternal.handler.HomematicThingHandler] - Channel not found for datapoint '002A5A49A6D827:0#BURST_LIMIT_WARNING'
==> /var/log/openhab/events.log <==
2021-11-10 16:14:07.442 [INFO ] [openhab.event.ChannelTriggeredEvent ] - homematic:HmIP-WRCD:3014F711A0001F9A49943176:002A5A49A6D827:1#BUTTON triggered SHORT_PRESSED
==> /var/log/openhab/openhab.log <==
2021-11-10 16:14:07.743 [WARN ] [ternal.handler.HomematicThingHandler] - Channel not found for datapoint '002A5A49A6D827:0#BURST_LIMIT_WARNING'
2021-11-10 16:14:07.884 [WARN ] [ternal.handler.HomematicThingHandler] - Channel not found for datapoint '002A5A49A6D827:0#BURST_LIMIT_WARNING'
2021-11-10 16:14:08.031 [WARN ] [ternal.handler.HomematicThingHandler] - Channel not found for datapoint '002A5A49A6D827:0#BURST_LIMIT_WARNING'

This happens for each press on the epaper switch.

I don’t have a clue anymore. Do you?

Cheers
Daniel