Devices keep disconnecting after 'network rescue' - worth resetting network?

Configuration Zigbee
1

For background: This post follows on from issues described here Finding disconnected zigbee devices (ZHA) and here:
ConBee II after hardware change. In brief: It looked like the coordinator and/or Raspberry Pi failed, so I’ve now moved to new Raspberry Pi and a new zigbee dongle (Sonoff). I somehow managed to migrate the network to the new dongle (see previous posts).

(EDIT:) Prior to the failure, the system worked perfectly, no dropouts (using Conbee ii).

However - since the migration/rescue (now running off sonoff) - there are some devices that keep disconnecting from the Sonoff and become ‘unavailable’ - the devices can be paired, and then work in HA, but then after a few hours become unavailable. The devices aren’t all the same or all the same brand - some Tuya dimmers, some door sensors. It seems to affect devices individually: E.g., one Tuya dimmer works perfectly (at some distance from the coordinator) while a Tuya dimmer in the same room as the coordinator keeps becoming unavailable.

I guess I have several choices: (1) Keep resetting the devices in question… well, I’ve done that a fair few times, including full resets where possible, and the behaviour doesn’t change. (2) Reset my whole network (with the assumption that something in the migration/rescue didn’t quite work out) - but… it’s always the same devices that become unavailable… so unless there’s somehow a clash with an ID, not sure that resetting the network would really help. (3) I guess I could replace the affected devices… but it’s quite a few…

Any thoughts or ideas?

MANY THANKS!!!

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Have you checked the topology map to see what the unavailable devices are connected to?
It might be the repeater device before it that is problematic or the route there.

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Seems like the throw it all away and start again methodology may have failed you. Time to find the underlying issue. Detailed examination of the error logs, firmware updates, and process of elimination by removing devices until the obvious one is identified may be the route to stability.

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