@yxedeco Great. The best placement for Deco units is where they can be connected by Ethernet cable to that switch. You will need to run Deco mesh in Access Point mode, this is configuration setting...

@yxedeco The requirement for Main Deco is to be connected with Ethernet cable to ISP modem/router. This could be long or short Ethernet cable, as long as it works. You do not need to place Main Deco...

@yxedeco One more thing. If you really must have Main Deco in the mechanical room in the basement (but I don't think why would you), then this is the alternative placement recommendation: 1. Main...

@yxedeco I am familiar with that modem/router, as I am also with Rogers and use same modem. You must have TV (coaxial) cables going through your house - they can be used to send Ethernet signal over...

@yxedeco What is the speed of your Internet link? Do you have Ethernet cables in the house, between floors? If not, do you have coaxial (TV) cables between floors, terminating at the basement where...

@CraigR4 This forum topic may help: https://community.tp-link.com/en/home/forum/topic/621412 Scroll down to "Captive Portal Authentication for Guest Network" and see if this is what you need.