I read the installation directions more carefully. It said, even if you didn’t see your device listed as a Meross supported device (I didn’t, it didn’t show light bulbs) pick a device anyway. It linked the ST app with the Meross Cloud and it worked! The two WiFi bulbs appeared immediately and I have pretty much the same control over them as I do with the Meross app (which is a very good app by the way)
So, I think Meross is the answer! Thanks! With WiFi the bulbs are far more responsive and easier to install. Also, I don’t have to struggle with the Zigbee mesh network.
By the way, I received my DIgi-key USB thumb device and plugged it in, but there were no instructions and no software. I wanted to map out my Zigbee network, but I have to wait until Monday to talk to Digi. Now that I’m relying on Wifi, I might return the device and just keep my Zigbee devices in the barn next to the ST hub.
Thanks again for the referral to Meross. Looks like a very solid solution. I think the user interface on their light bulb app is far superior to the ST integrated solution. But I like the fact I can now utilize those bulbs in my ST automations.