@AlwaysCurious It doesn't matter~

@DudeBro I‘m not sure, but here is the detailed configuration guide(40.42) you can see. Which openvpn client software did you use on the VPN Client device? Openvpn GUI or Openvpn Connect? Better to...

@mode4 Yes, Client CPE POE port----POE Injector LAN port-----POE injector LAN port-----AP CPE POE port.

@bm3 Have you tried DMZ?

@JBortone Check this, they are different features, and the load balancing will be not active if you enable link backup.

@AlwaysCurious Hi, they are all unmanaged switches, and all ethernet ports are the same, just need to use the cable to connect them together like: TL-SG1024----TL-SG1024S-----TL-SG1008MP----PD devices