@RedT25 Yes, you would be able to do that. ------ In regard to your choice of Deco model. I can find at least two Deco models under AC1200: Deco E4 and Deco M4. There might be Deco M5, too. If you...

@Iwao This may sound silly, but are you sure this "network client" connects to Deco mesh and not somewhere else? If it connects by WiFi, you should check that. --------------- This is just a theory,...

JohnJohn25 wrote Thanks for the feedback, but my router does not allow me to change my DNS server. It's blocked. Is there other way I can do this on the Deco? @JohnJohn25 Only by switching Deco mesh...

@yusufbogatepe In your case, this may help: Deco S7 1.5.0 Supports Connection Preference, IOT Network, WPA3 and More

@JohnJohn25 With Deco mesh running in AP mode you will have to set custom DNS on router to which Main Deco is connected.

@Antoine_B As I thought. It appears to be common issue among long term owners of Deco M9 Plus. For solution, see: https://community.tp-link.com/en/home/forum/topic/671334?replyId=1369784