@moo_tada Sounds like some sort of hardware issues for me. There are no configuration settings that will force Satellite Deco connect to Main Deco if they can't on their own, when they are in close...

@TeeDee1980 From Do I Need a Firewall if I Have a Router?: "Home routers use network address translation (NAT) to share a single IP address from your Internet service provide among the multiple...

@AndyKH If you plan to use X95 as a router, you should know that its parental controls are very easy to bypass. If you need parental controls feature, look for something other than TP-Link Deco...

@Nobby101 Check this topic: https://community.tp-link.com/en/home/forum/topic/276958

@JoeV1 You can do that with M4 on hardware V4. You listed hardware V7 for your M4, such hardware version does not exist. Deco M4 is available in V1, V2, V3 and V4 hardware. Find actual hardware...

@jamesjamesa WiFi 6 capable Deco such as X50 will not improve speeds in your situation. Thick walls are WiFi signal killer. Development of WiFi protocols goes in direction of faster speeds in...