Try to follow the tips in the FAQ link. https://www.tp-link.com/en/support/faq/1447/

Please tap that client on the Devices page, then check if it's MAC address matches any of the Deco units. Maybe it's one of your client devices but reports an incorrect name. And you can modify the...

Please make sure your other devices are all connected to Deco's main network, not guest network. Then check if you can see them in the Devices list in Deco app. If yes, tap the device you want to...

m5owner wrote I just updated my Deco M5 firmware and it's malfunctioning. The firmware prior to this one was working really well. Should I use the beta firmware? Hi, could you provide more details...

Do you have a computer connected to your Wi-Fi network? If yes, please try to make a DNS resolution on your computer for a check at first. Let's take Windows PC as an example. Tap the Start menu and...

The latest firmware (version 1.2.8) for Deco M5 has fixed this problem. Simply open Deco app, tap "More" -> "Update Deco" for a check. Download and install the latest firmware. If you have any...