@Zeegske Sorry for the mistakes. M5 did not support changing channels as well. But it has network optimization and it would update the Deco to the suitable channels. And the latest Deco APP added a...

@Del_Monte Hi, thank you very much for your kind feedback. I have seen that my college already followed up on the email and would like to forward the case to the senior engineers directly. Please...

@David86 Sorry and here is the correct link: https://www.tp-link.com/it/support/contact-technical-support/#Hotline-Support Thanks.

@Spamtomas Hi, thank you very much for your feedback. Just to confirm, before the firmware upgrade, if the login password is over 15 characters, after the firmware update, you could not use the same...

@Bernardo12 Hi， Did both of them have an orange light, or just the slave unit? Is there another wall socket to plug this adapter? And if possible, please also try to turn on the VDSL mode to see if...

@DiveFrosty Hi, Normally V1 could not update the firmware of V4. And could you please double check both of the TL-PA4020P are V1 or V4? By the way, since you have updated one of them already, could...