I have one x50-5g + two x20

A. IoT network will appear only if one of the x20 is set to main (but my main is the x50 with a sim card) 

B. In None of them the management of the networks as one will expect, can't bind to a specific network (scoping) by Mac address so a non IoT will be transferred to main/guest network and IoT devices that has connected to the main will still get an IoT range ip address. 

C. Isn't the idea of having an app is to have more or less Uniformity? With a disabled an enabled features to all my Deco devices on the network? Without the need to make one the main in order to do something? 

I'm begging to regret ever getting a tp-link Deco.