@DrChris Many thanks to your insights. My situation is similar. ADSL connection and the Deco P9s connected to it in access point mode. But the results seem different. Mobile phones seem to work well...

@Jose_Marrero Check the IP address of the laptop, plus the gateway and DNS server.

@TP-Link_Deco Hello. That modem had no bridge mode, but due to being partially fried due to a thunderstorm, it was replaced with a techicolot TG784n v3, and this one has a bridge mode, and it seems...

@TP-Link_Deco Regarding the DCHP settings, I think you should have 3 modes: Smart DCHP (apparently fixed, as the Decos don't seem to be passing the real gateway information after a while) "Standard"...

@TP-Link_Deco This particular modem doesn't allow bridge mode unfortunately. I looked for it, but couldn't find any setting for it. But it got half-burned on a thunderstorm last Friday, so it's going...

@DK26 Unfortunately they seem leave a lot to desire at the moment. Looked like the ideal solution for me, and on paper they still are. And on the positive side they do have greate WiFi coverage and...