TRANSMIT_COMPLETE_NO_ACK on all Fibaro switches

I have several Fibaro switches and relais in my network since a couple of years now. Since two days, however, I’m no longer able to operate my devices via these Fibaro switches. The error msg popping up is TRANSMIT_COMPLETE_NO_ACK. Restarting the Fibaro App as well as Homey itself, did not bring a solution. I have an early 2019 hardware with 7.4.1 on it. Is anyone else observing similar problems? Any clue to get the issue solved?

Instead of restarting Homey, try PTP.
If this doesn’t solve the problem, use an other power supply with > 2 A.

Thanks for your feedback! Unfortunately neither the PTP, nor another power supply did help.

I’m sorry, then I would suggest to contact Athom support.