@Julianto If power LED not bright, I think your switch is damaged. Because it's damaged after thunder, unfortunately it should be not able to be replaced.

@Burczymucha Just provide some suggestion for your switch's settings. 1. As I know, we should not enable voice vlan and auto voip together. TP-Link has a FAQ to introduce the difference....

It seems only support remote management for web-gui. And it's able to choose http or https.

@Burczymucha All settings seems be right. Do your clients get IP address from the router? If change the switch VLAN1 to dynamic IP, could it work normally? I cannot think out other method. Maybe you...

@Burczymucha As I knew, VLAN 0 means that the packet doesn't belong to any VLAN, but carry 802.1q priority tag. This may be the reason. 192.168.1.249 should be in VLAN1. Maybe you can check if there...

@ykzamorpheus If you use backup function and wan2 is backup wan, then wan2 will offline unless wan1 down. If wan1 and wan2 both offline, it should has problem. Please note that backup function is...