@menakarina25 If there is already a DHCP router, the access point mode would be better than router mode. I used it in Access Point mode as the main router is more powerful. There was a new 1.8.2...

@David-TP Will Archer NX200 support IP-Passthrough mode as well?

Yes, it can be added into previous Mesh system:https://www.tp-link.com/en/support/faq/1590/

@Open_DECO_P9 Отлично! Моя гарантия, вероятно, заканчивается, и стоит попробовать.

@Jerar Hi, Factory reset the Deco once by holding the reset button for 1s. Then you can set the main WiFi network on 5GHz only, then enable the IoT network for 2.4GHz. If the 5GHz band broke again,...

@Uzumaki001 You can contact the retailer to get a replacement if it is still under warranty.