I have a TL-PA8010P  connected to the router (ethernet cable), and a TL-WPA4220 as extender of that. Everything is working fine.
I cannot access the 4220 remote extender: when I select "Option" or "Advanced", the tpPLC sw (both versions, Windows and Android app) ask for a password; there is a popup with two fields: "new password" and "confirm new password".
I entered the password of the extender but I receive the following; "must contain at least two of the following characters: letters, numbers, symbols" .

If I create a new password, does it affect with other authentications or what?