I love it when people come over to Tuya/Tasmota as it really is a nice system so I am more than happy to help. For most stuff you should be able to use Tuya convert see here so if you have a raspberry pi laying around just follow this. Once you have converted it to Tasmota then you go here.
I have an Xbee too that is great for the network map so you haven't wasted your money there. The sniffing is for pulling traffic to reverse engineer / write drivers something of which I cannot do but I am able to at least pull data and hand off to a developer 
