@Loli Good day. May I know how long have you had the power-line adapters? For the firmware, if you have the EU version, please refer to this link:...

@Battistini98 Good day. Thank you very much for your time and patience. The power-line adapters would work no matter the main router has Wi-Fi or not, 2.4ghz only or 2.4ghz and 5ghz both supported....

@.o0O0o.o0O0o. Good day. Thank you very much for your time and patience. We did not test the minimum threshold voltage for the power-line adapters yet. But the instable voltage might stop the...

@Wayne_Hunt Good day. You could add TL-WPA8630P to work with TL-PA9020KIT; Such as https://www.tp-link.com/home-networking/powerline/tl-wpa8630p/ Thank you very much!

@AnotherRod Good day. Please refer to the following suggestions： reset the not-working TL-PA717 by holding the pair button for 15s; then put this one next to another TL-PA717 which had already paired...

@Ganmar Good day. Thank you very much for your kind reply. When it stopped working, can you still see the 2nd power-line lights lit up? If not, please reset the Wi-Fi adapter by holding the reset...