You are 👍, nextcloud needs like 2 admin per each user. The snap version works fairly well even after a lot of virtualization layers. Proxmox -> Ubuntu LXC -> Snap -> Nextcloud

Ubuntu was great, until Unity debacle, when I switched to Mint DE. Few years later I returned to an Unity free Ubuntu just to be welcomed with snaps and Ubuntu pro.

Which MMwave sensor did you get?

I used or it used me for a couple of years. Then while looking for a replacement I found the snap version. I installed it in a fresh Ubuntu VM and it just works.

I have the same problem with a zwave energy meter that randomly send a single reading of multiple gigawatts. This makes the history unusable until I manually delete those data points. I haven’t noticed this problem with any of my zigbee sensors.

Anything other than QNAP.

Eaton is my recommendation. Look at the 5S1500 (modified sinewave) or 5SC1500. They all work with NUT. I have one of my UPS connected to a Raspberry PI Zero with NUT. And my servers NUT clients are scheduled to shutdown after a 2min outage and my NAS after 4min. I can also monitor the UPS from Home Assistant and receive notifications on my phone each time the UPS goes OB or OL.

https://www.eaton.com/content/dam/eaton/products/backup-power-ups-surge-it-power-distribution/backup-power-ups/eaton-5-series-ups-brochure-br153013en-lr.pdf