@ken_09 Hi, can I have a picture on the tether APP that asked for a password? Have you tried the password for the TP-Link email ID? Thank you.

@Artu18 Hi, please refer to the private message for further instruction. Thank you.

@jtreg Hi, you could refer to this link to set up Raspberry Pi as the DNS server: How to use Pi-Hole DNS Server on TP-Link routers?

@Collin_2 Hi, when Deco M4 Is in the firmware recovery mode, the LED lights should be solid green. Could you please refer to this link to run a firmware recovery again: How to use firmware recovery...

@Pi0tr Hi, May I know why did you want all LAN devices able to access the Raspberry Pi server, for Ad-blocking? If yes, you could set up Raspberry Pi as the WAN DNS of Deco: How to change DNS server...

@JanRekenaar Hi, they will still work fine with Deco.