SMTONOFF SMS-19006 - energy meter loses connection with Tuya and Home Assistant after time

Welcome.

The patient is an energy meter, single phase.
SMS-19006 by SMTONOFF.

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The device paired nicely with Tuya and Home Assistant.

Unfortunately after about 2-3 days, sometimes even after one, it starts to bounce.
Namely, even though it is visible in the router, no data is transferred from it.
The interesting thing, however, is that the device can be remotely switched off.
To get back to the feed I have to uninstall the meter in the app and HA and re-add it.
A little inconvenient.

This state of affairs was not immediately but after about two months of use.

Has anyone encountered anything like this?

Thank you in advance for your help.

Every now and then on the forum we have various strange cases of incorrect behaviour of Tuya devices with original software, but from reliable and tested methods to recommend I have only one - check the power block and capacitors. Check them visually, and if not, then try to power it from an external power supply, e.g. supply 5V or whatever is needed on the appropriate line, so that the WiFi module gets its 3.3V and see if the problem persists.

Ok.
The current case is as follows.
The power supply circuit has the correct parameters.
Capacitors soldered out, checked, soldered back in. Parameters are almost modelled.

The component responsible for communication, data does not heat up strongly. Below 45 deg C.

It is possible that its software has flaws.

Is there any other proven meter, disconnect, differential in one?
Preferably Tuya, although Zigbee is also an option.
I also have a gateway installed.