somfy blinds stop working. why?

[BartSr]

Domoticz 2022.1

Hi!

I control my somfy blinds with the somfy remote control as well as using the rfxcom RX/TX.
Out of the blue it was not possible anymore to control the blinds using Domoticz.
I did a reset on the somfy blinds. Readjusted top and bottom postion etc. using the somfy remote control Therafter I created new controls for the blinds using the RFXmngr.

So far so good. I was able to control the blinds again from Domoticz. Both manual as well as using a script.
But after a few days again it was no longer possible to control the blinds using Domoticz. Using the Domoticz control a blind just moved just a little and than no control was possible. No Up, No Dwn and No Stop. Same for all other blinds.

I am stuck.
Any suggestions?

TIA
-Bart

[BartSr]

Update:
It seems a now-and-then error.
Sometimes the error is there. Another time all works as expected.