@JordiB @TP-Link After I did a lot of "Network Optimization"s without success, I gave up. I did enable the option to "Disable Ping from WAN" in the IPv4 settings in the Advanced options and then......

@TP-Link I tried the beta firmware but it doesn't do anything. I have three Deco M5 units set up in a line: Main unit <------> Second Deco <-----> Third Deco Third Deco should use Second Deco as...

@TP-Link Can you send me the beta firmware please?