Sonoff and Ewelink are going crazy - disconnecting for no reason.

Hello, I have pored over the smart stuff in my house, specifically this:

- sonoff Dual R3 roller shutter controllers
- lED drivers Sonoff Basic R2

In addition, to improve the range, I have a Mercusys ME60X repeater


The problem is that on random days and times it disconnects some devices in the eWeLink app, it just grays out and shows that the device is OFFLINE.
This is strange because nothing is being buried, nothing is limiting coverage.
Yes, after a while - sometimes longer, sometimes shorter - the problem resolves. If, on the other hand, I reset the repeater, then after the reset the problem is immediately solved and the devices are ONLINE.

I don't know if it's the channels over Wi-Fi or what, but it's annoying already.
Today was the 1st time that I got up at 6:00 am and the LEDs were on, which turn on at 8:00 pm in the evening and could not be turned off in the app because they were "OFFLINE"....

Mercusys ME60X ustatly firmware update dated 2023-11-24.
Were faulty replace repeater.

Yes, it's just that not all the devices I mention are connected via a repeater....

Some of them are connected directly to the Wi-Fi without a repeater, and still disconnect.

and which router?

https://cdr.pl/p10109,huawei-hg8145v6-termina...wi-fi-5-ac1200-4x-ge-1x-rj11-pots-1x-usb.html

This is the one I got from the fibre optic operator.

1.Instead of a repeater, use an AP
2. Instead of a Chinese cloud your own server and possibly your own VPN or Tailscale, Zerotier etc.
And the problems will disappear

1. I wrote that it's not just the devices that are further away, after the repeater, but also those that are closer to the base router.
2. How do you make your own server for such things?

List of Smart Home self hosted solutions:
https://github.com/pfalcon/awesome-smarthome