I have a similar problem with devices controlling a very low powered solenoid valve.
First l tried a quality Z-wave switch then a cheap matter over WiFi smart relay. The both work for a while then go offline. I have the power cycle the circuit to get them back on line. They are all close to my hub.
I never considered that the inductive load may be causing the problem.
My next opinions are a WiFi switch or a ZigBee smart relay, based on spare devices that I have.
Three of my Eve Energy are connected to fans (30-60 W) and one to a fridge since about two years now. No issues here.
Yes, as they do from time to time throughout the year they dropped from 40 squiddlies down to 30. That compares to the Onvis which can be bought pretty much all year round for £16.50 as part of a two pack (the four packs used to be cheaper but have had limited availability for months and they are not currently discounted).
Onvis s4 is now updateable to matter 1.4 and thread 1.4.
I have two of these and one updated via firmware check and update using AWA. The other is reporting no update available yet 
A full 24hrs later and I can’t get the other Onvis outlet to update to matter 1.4 despite repeated checks for update and even deleting and re-onboarding the device. I ordered the two as a pair and they came together so I’ve no reason to believe they are different hardware versions
Update: a few more attempts from AWA and the update finally applied to the second outlet.
I’ve got oodles of them. I’ve given a few a poke via commands but so far only one has updated and I don’t know if that was a coincidence as I don’t have a scooby how the automatic updating works.
It is good that the update is now out there as I haven’t bought any more since I had to return my last purchases because they had old firmware. There isn’t really any credible competition for it in the UK.
Revisiting this. I only ever did manage to get one plug to update to version 1.4.0 back in January and left to themselves none of the other plugs have been updated automatically.
Three weeks on and I have revisited the plug updates. None have been upgraded automatically. After trying the ‘check for firmware update’ and ‘update firmware’ commands a number of times I seemed to hit a window of opportunity where a few hubs did detect an available version and request an update, but that then seemed to close on me. One did seem to install an update quite quickly but the others are still on ‘update requested’ about ninety minutes later. This process really does suck.
Seemed hit and miss for me. I had to trigger it. I did check and then install in quick succession quite a number of times to get the second one updated, first one was first time I think . Its like the updates are rationed
Continuing the saga …
At the time of my last post I mentioned that a number of devices were at the ‘Update requested’ stage. Well they were still saying this three weeks on, though manually requesting an update again via the AWA seems to have been successful.
Similarly, manually checking for the latest update seems to have been working relatively quickly, although it takes just long enough for you to think nothing has happened.
Today I discovered a forgotten Onvis in a bag and installed it. When I viewed the device the mobile app immediately told me there was an update and asked me if I wanted to install it. Given I have automatic updates enabled this seemed like an unnecessary question, but as the mobile app hasn’t shown any interest in any of the updates I’ve been attempting on and off since the start of the year that was progress. It also told me it was updating on the Information page and displayed an icon on the dashboard tile while it quickly and successfully updated.
Sounds positive, and hopefully it continues.
