@Kawachira With 802.1q VLAN settings one port can only have one PVID. It looks like you want to determine the VLAN but the client device's MAC address? You may try MAC VLAN settings. I did not test...

@Coldsprings Here is my suggestions: 1. Use ER605 to repalce the 1st Netgear, to connect the Modem; 2. Create the two VLAN networks in ER605, for example port 4 VLAN10, 192.168.1.1; and port 5 VLAN...

@ctasaycoa Insight, there is VPN status option.

@IDB Hi, what is the exactly model number of your switch? T1600G-52TS or TL-SG2452? They are different models. T1600G-52TS V4 supports SDN controller, just need the newest firmware. But TL-SG2452...

@RobWilcox If your router also tplink? Check is there any other devices use the same IP as the router, specially the switch. Some switches may also use 192.168.0.1 as default IP.

@SimonFili Is there any VLAN ID you set up for the SSID? It seems a DHCP issue. Try remove all VLAN settings or move all SSID to the same VLAN, to see if it can work.