@Kevin_Z   The picture attached is from Home Assistant. i have no way of getting that info from the Tuya app, but they do show as offline in the app at the same time as being shown unavailable in Home Assistant.

The devices that are affected are gosund branded Tuya devices.  It seems like it may be a range issue as devices closer to the router are not affected. maybe the power output was reduced in the latest firmware, but i don't see why TPlink would do that.

I have a couple of other devices (Atomi Smart string lights) on my gazebo which worked fine before the update although they were pretty much at the limit as far as distance from the router goes. Those too now  show as offline. I tried to re-add them to the wifi through the app, but they did not find the network/wifi signal

I think I might have to get a mesh range extender and see what happens.

Another case of "If it ain't broke don't fix it"...