@dunxd hi! Yes, they provided me with a new router that is connected to an electrical socket adjacent to the powerline. I'm not using any extension lead as I know they may cause problems. As for the...

Forgot to add, my powerline kit is TL-WPA4221 KIT

Hello! I've recently switched internet provider, and all of a sudden my powerlines won't work as well as before. I've tried everything from resetting to buy a new set in case the old set was broken...