WiFi socket - spontaneous shutdown during operation, what could be the cause?

Hi. The Wi-Fi socket is shutting down on its own.
I have several Wi-Fi sockets in my flat and they all work without any problems. The problems are only in one room. Whichever one I have in there I don't switch on, it always shuts off after some time (sometimes it's a few hours, sometimes it happens every few minutes). After such a switch-off, it varies. Generally you can turn it on immediately, but there are times when you have to wait longer for it to be an option. I thought maybe the Wi-Fi coverage was poor there. But no, checked and it's fine, the signal is good. Interestingly, the outages mostly happen in the afternoon/evening. So another hypothesis, maybe some other Wi-Fi network is interfering. I even changed the channels on the router. It didn't do anything. When I turn on the same socket in another location it works without a problem, it doesn't switch off. The control for this socket is either via the app and scheduler, or via a Zigbee gateway and a dedicated switch on the wall.
I'm running out of ideas on what else to check and how to solve this. Anyone have any ideas?
AI: What is the exact model and manufacturer of these Wi-Fi sockets you are using?
I have Emos IP-30001F and Blow Wi-Fi sockets. They all behave in the same way.
AI: What devices are connected to this socket in the problematic room and what is their power (approximate or maximum)? Have you tried leaving the socket unloaded to see if it shuts off too?
This is always a standing lamp with one LED bulb. Load: a few watts. Yes, without load it also switches off.

Maybe it's not the fault of the sockets, but a misconfigured router? Maybe the IP attribution is too small a time window, or enabling stand by on the Wi-Fi....

>>21791942 Then it would be the same in another location, and they work without any problems.

Plug a microwave oven into the socket (without that Wi-Fi switch) and set a timer in it. If the timer resets, this will indicate that there are short power outages at the socket. Provided you happen to have a microwave that loses its clock setting every time the power is disconnected (but I haven't seen others yet, overall).

This would make sense. But all the sockets in two rooms are fed from one fuse. Nothing strange happens in the neighbouring room. I can't imagine, as an electrician by trade, what could cause such short power outages in two sockets in one room. Because I have checked in each one, and there are two precisely. I don't have a microwave unfortunately, but something else I might find.

>>21792160
If the various Wi-Fi sockets in this room switch off in the same way, it reminds me of a problem observed in several flats, that only in one room the bulbs in the chandeliers died quickly.
I would place my bets not on the Wi-Fi (although I wouldn't rule out strong interference from the neighbour behind the wall), but on the electrical installation and, for example, some hidden cold contact box.

Observations continue. And it can keep the light on all day, nothing happens. But every day it will switch itself off between 10 p.m. and 11 p.m. And interestingly enough, without a reset (read: taking it out of the socket and putting it in) for about half an hour, it is impossible to switch it on. Neither with the button on the case, nor with the app, nor via the Zigbee gateway. After a reset it lights up for a few minutes or so and then goes out again.
It is as if, in the evening, some strange interference in the network occurs. This powerlessness for a long time is puzzling. And the immediate start after a reset, even if only for a moment. This is getting weirder and weirder.

I think the problem has been solved. But one step at a time.
Desperate already, I started playing around a bit in the app from managing all this. And in the Zigbee gateway I found the option "Check network". What was my surprise when it turned out that the gateway could not connect to the WiFi network. Interestingly, this was time-synchronised with these mysterious shutdowns. Puzzled, I check the WiFi, roam all over the flat, there's a good signal everywhere, so what's the problem? Why is it having a problem? And a daze at one point. The gateway was in a place more or less where there was similar signal strength from the router and from the signal booster in the next room. Both networks have the same name, but apparently this device couldn't decide which one to take the signal from. And as a result it was having trouble connecting at all.
I moved the Zigbee to another location and the problems stopped. I have been watching for 3 days and not once has there been an unauthorised shutdown. So I think I can consider the problem solved.
Probably if I had WiFi with different names, the problem would not be there. But it's better with one, the devices connect independently to the best signal source.
Thanks to everyone for their suggestions. Maybe this story will be useful to someone someday.