I don’t have the HMS (Don’t trust Wyze to provide this type of service, and have no need for it, prefer self monitoring)
I’ve read here on the forums that HMS will only work with One Wyze Sensor Hub
(I think you can add other sensors to the 2nd Wyze Sensor Hub, but they will not be usable by the HMS system)
Hopefully someone can verify this info for you.
SJ