Wyze Sense Hub will not connect to WiFi

[WildBill]

This post explains the basics for how to switch to wifi:

Wyze Home Monitoring - connect to new network

To choose a different network do i need to remove every device individually, then re-add hub and start again? We have T-mobile home internet (modem battery lasts a couple hours). Had I known Wyze hub had battery backup I would have connected directly to Tmo modem instead of mesh routers and used built in battery in both devices to maintain security through short power failures. We did buy multiple extra sensors and I expect I will have to delete all individually and start again, but also hoping…