I have a C7 hub that has worked well until the last few days. I have added a few new Sonoff ZBMINIL2 (x5), ZBMINIR2 (x1), and SwitchMan Zigbee Smart Wall Switch (ZBM5) (x1). Before I installed these zigbee devices, I did not experience any problems.
After I installed these zigbee devices, I started to experience the zigbee network going offline. I am unable to figure out what is causing the zigbee network to go offline. When I reboot the hub, the network comes back online. I tried disabling and then enabling it, but that did not fix the network.
Here are a few screenshots showing that the zigbee network goes offline and comes back online several times before eventually going offline until rebooting the hub.
My bet is that one of those new devices is spamming your zigbee network to the point it crashes. Look in your various logs for devices that have an unusually high level of activity -- it'll likely be one (or several) of your new ones.
I see that this is a new multi-gang switch; the Tuya driver will not work with more than one switch at this time. Until I make it support child devices, you can use only the first switch with the Tuya driver. So, at this time, you'd better remove it from the C-7 Zigbee mesh, or use only one gang.
Thank you very much for your help and for developing the driver. I have updated all my Sonoff switches to this driver and they seem to be working well. My only observation is that the Device Profile for the ZBMINIR2 and and the ZBM5 is shown as UNKNOWN. I do not anticipate that will be a problem.