@AdminCat sorry but I see you have an unmanaged switch now, you must have a managed switch to be able to use vlan,

@AdminCat yes, it looks like this, have you tagged the switch with vlan 10 and 20? or are the access points connected directly in the router?

@AdminCat hmmmm, when you create VLAN do you enabled interface on router conneted to the switch?

@AdminCat there have been many problems with DHCP on all tp-link routers for a long time, this should probably be solved with the latest firmware upgrade, so try adding version 2.1.2 to your router,...

@Zosha You can do this in controller version 5.8 i Guess this is available to oc200 soon. This is done on router property and ports.

@Stanislaw123 it should not be necessary to open any ports, what you can try is to disable SIP ALG on the router, some solutions do not work if this is enabled, others must have this on so it is a...