@OneScript Hi, Do you mean you want the Wi-Fi passwords shown within the wireless settings of the router's webGUI to be represented as dots or stars and only to be revealed after clicking a toggle...

@MattSmith123 Hi, Is the connection you are trying to setup really the sole and only connection that exists on your TD-W9970 router? In case it's not, then make sure you delete any superfluous...

@dralimalwan Is the other Deco M4 V1 also using firmware version 1.5.6 ? In case the other Deco M4 uses an older firmware version, then maybe the Security option was removed from the web management...

@bUrNaDdIcT I actually meant to ask if it is possible to move the main router over to your place, so that the other guy can't mess around with it?

@bUrNaDdIcT If the Archer C20 is at your own place and the other guy doesn't have the password for it, then he cannot get into your C20 router. If in doubt, then change the C20's password again. Is...

@dralimalwan Hi, TP-Link's Deco line of products was specifically designed to be setup via App only. https://www.tp-link.com/en/support/faq/2464/