Let’s start with Security and Sensors.
Click on Locks and then Add Device to start adding the Schlage Lockset that we installed on the door.
You’ll need to load the 9V battery into the bottom of the bridge and then follow the add instructions on each device. The process is simple: press the + button on the bridge and then press the enroll button on the device when within 6 feet of the bridge. Wait until the amber light stops flashing on the bridge; the bridge must process the information from the lock. If you move away before that process completes, the device will not work correctly on the Nexia system.
Once you’ve enrolled the devices, log into your account and check that they are there.

If you looked up the relationship of vivint 2gig and nexia. You would realize where all this technology stems from. In one way or another it stems from vivint. Just saying.
Not sure what you are getting at. Vivint uses Alarm.com as its backend, where Nexia hosts its own servers and maintains its own systems while you provide, via broadband internet, the pipe to the Nexia servers. Vivint was a viable option, but wanted a contract extension of 52 months and offered entry-level locks.