Guide to setting up a vlan on the GL-iNet routers?

My security camera system is currently on the 2.4 guest network of my GL-iNet MT-6000.
The cameras must be on WIFI. I would like to put them on a wireless vlan so I can turn off the guest network. I have four cameras and I don't plan to use a switch though if need be, there are two managed switches on my lan. I also have several other GL-iNet travel routers that I could turn one into an access point if that is a better way to go. I have created a vlan on the Slate Plus travel router and the ssid showed up in network manager on my pc and the network&internet settings of my android phone but I kept getting connection refused messages and such.
I used the procedure on this video:

If you need more info just ask. Thanks