@Aaltje. Sorry to tell you that we only provide English Service for Global users, so we tried to translate your question into English and continue to help you. Wish your understanding. The wifi...

@aikkon Hello, once you set up the parental control for some device, there will be a profile appears, and you can click it and choose Time Controls to change the limit time. May it help.

@Insidiouzz Hello Luke, theoretically, the devices that do not support 5GHz can still detect the 2.4GHz of the Deco P9, you can try to disable fast roaming and turn on the main Deco only to verify...

@Wolliwuk Hello, can it detect the Deco's wifi when you setup the Eufy plug? Is there any error message if you failed to connect it to Deco's wifi? Try to disable fast roaming and turn on the main...

@TheSam Hello, what is the distance between the Deco units? Per you said, due to the distance and walls, the signal strength obtained by slave Decos may not be good enough. You can try to move them...

@eeiciap Hello, the 1.4.2 firmware is mainly used to fix the issue mentioned in my original post; For the WAN DNS/local IP issue, you can change the DNS or LAN IP to another subnet as a workaround...