@Fae and @Hank21 Is there any news on this please? Just upgraded my ER605 V2 to latest firmware 2.1.2 Build 20230210 but still no luck. USB Modem connection is up, internet access is working...

@lemaoCool As a first step - did you reset to factory defaults on new firmware to see if that helps?

@Kroko Reminds me on this one: https://community.tp-link.com/en/business/forum/topic/596988 Also WAN interface missing in config. Has been marked to be addressed soon. Let's hope the same thing to...

@Zeppi The question is what do YOU mean with "but in the 2.4 network many Smarthome devices go offline." As long as you setup everything correctly and connect every smart device to the proper SSID...

@jokerde This switch is UNmanaged, there is nothing to be reset and hence there is no reset button either. It is a simple plug-and-play switch with no configuration options (no web interface)....

@Zeppi Sure this is possible - just make sure your main WiFi and the Guest WiFi have different names and all devices are connected to the proper one.