@cooler-master The topology seems fine. If you have any dead spot on your first floor you can set 2A: Optimum Gateway (bridge mode) --> 2C: Archer 1500 router #1, wired (if that's possible).

@N5MOH Here's a description of this problem (Case 1). For Archer C60 v2 you have to contact your local support (noted in the solution section).

@SteveMyers75 The Deco has a limited management capabilities via a Web browser interface - details. That's why the Deco app is used for configuring more advanced features. Deco app is available for...

@NuklearNik It seems that your HW vesrion is 2.6 but don't worry about that - (Normally Vx.0=Vx.6/Vx.8 (eg:V1.0=V1.6/V1.8); Vx.x0=Vx.x6/Vx.x8 (eg:V1.20=V1.26/V1.28) That means the FW release for v2.6...

@LukasBradley Refer this FAQ regarding Deco WebGUI. However I believe that you won't be able to use WGET or CURL with this interface.

@KWRoller Yes, there are router models that allow a limit of 64 entires in the Whitelist. Check here and here.