Thanks for the info. Good to know, that I'm not alone
Is there anything we could do in addition to find the problem?

Hello,
I have another problem with that device. I just bought this Siren Aeotec Gen5 and have included it without any problems.
But if I want to change the parameter "37. Siren sound and Volume" and apply that configuration for this device I always get the message "Problem updating Node ...