From one moment to another almost the half of the devices are offline. We are using a ConBee II Stick. In total we have 70 devices, and many of them are 230V devices (RGB-Lamps).
In the deCONZ Container can find many logs like this:
Same for me actually. I’ve been using ConBee II on a Raspberry Pi (with the extension cable) for a few years. Recently I have added a bunch of devices (mostly bulbs/LED strips and smart plugs) and then remove a few of them from power. Afterwards my network lost most sensors (battery devices). That’s not unexpected, but I was confused why it didn’t converge again after a while (it didn’t).
Also since then I have repeatedly lost a bunch of sensors in the middle of the night.