@mdsf If that's on the C64 where WDS is configured, it's quite possible that this happens because the WAN port is not used. If not, there is another bug like this one and I'm pretty sure that a new...

@Saga86 If your C20 has been provided by your ISP it may have a customized FW. If that's the case you may try this suggestion to reset its configuration.

@Tpatlink Have you tried this setup video guide ?

@branestormer Have you tried this setup video guide ?

@John_1959 From your description this topology as been described in the following FAQ. Depending on the size of your premises you may need more Deco units to cover it.

@tikmok Every TP-Link router can work in AP mode. Here's the difference between wireless router mode and AP mode. You can freely use a router of your choice in AP mode according to your requirements.