@NoorezK May I know who is your internet service provider? Please access the web UI and show us a screenshot of the advanced-status page. How does the router get IPv6 address? Via DHCPV6 or SLAAC?...

@Pola There is a power supply included on the package box. And if you want to buy another power adapter, you can buy a new one as the spec of the power adapter. Below is an example of Deco M5 v3. AC...

@zamecnik What is the current internet IP address of the Archer C1200？ Please ensure that you have enabled remote desktop service on your laptop. Below is the instruction:...

@Rodrigo_fac What about other network activities, like the browsing, downloading and so on? Do they have the same issue? When the WAN LED turns red, please show us a picture of the ping results; and...

@HansB Please change another cable to connect the TL-WR841N and the modem. Try to change another ethernet port on the modem to connect to the TP-Link router as well. Try to connect your computer to...

@Razr As you mentioned that Pi-hole can't do it without the local domain name, could you please provide more information? Meanwhile, as my knowledge, you can customize the LAN DNS server of the Deco...