@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...

@olivier483 Hello, only the main Deco gives out IPTV, and there is only 2 ethenret ports, and one of them need connect to the modem to get internet; If you have multiple IPTV devices, you can order a...

@RyanL Hello, you can use the local upgrade tool to degrade the firmware, see attached below: http://support.tp-link.com/f/942a0833b8/?dl=1 Meanwhile, may I know how did you install the V2 firmware?...

@MJC_OK Hello, can they detect the host network form the Deco M4? Is there any error message indicates that they failed to connect to it? Try to disable fast roaming and try to forget the network on...