@Arnab9191 Check your wireless settings for any changes, which could cause such an issue. If hey are intact, you can try a downgrade to the previous FW release from here.

@ArielOM Here's where you can find this FW release. Unfortunatelly this FW release is described as not downgradable in its release notes. What you can do, is try the FW recovery procedure (method 2)...

@zEnterHacker The problem of separating the main network traffic from the guest network traffic has always been present, when a standalone device is in AP mode. When in Easymesh, your master AP...

@Buckyzas97 A similar issue but with 5GHz band only enabled has been observed here and here. This could be an issue with the FW release. In another thread a newer FW release has been identified as...

@ashish7adlakha If your main router is not a TP-Link device, most probably setting up an Easymesh won't work for you. You can just enable the Easymesh feature on BE400 and test if there's any...

@MrSimon These are the modem routers that support a DECT phone. From all these three, I believe only VR2800 has an IoT network implemented.