I am experiencing problems with two of the adapters in the kit. One has ceased working, and I am now unable to get it to connect from any mains outlet in the house. I have only a single mains distribution board. The other adapter was a spare, worked a few days ago (although it took a few attempts), butnow it too will not connect. The remaining adapter and the wifi extender continue to function perfectly, and both can be seem on the tpplc app on my pc.

I've been through all the reset procedures on bot non-working adapters. I have tried the adapters in various locations around the home, but to no avail.

On one, when I try to attach via the tp-plc app, the power led goes out, then all 3 leds flash momentarily, leaving only power led lit. On the other, all leds flash when it is powered on, but only the power led stays on. When I try to connect to this adpater with the app, the leds do not flash.

How can I get these two adapters to work?