Using 1.5.0 here. Without any issue, and WPA2 only. Main network with 5 decos M5 runs smooth. On Wifi settings if you click on Network name you can change security settings. Include now NONE as...

@Livan With this https://www.tp-link.com/en/business-networking/omada-sdn-access-point/eap660-hd/v1/#specifications You got half your fiber

@Livan "In another words how I can distribute 5Gbps fiber bandwidth through WiFi ?", Impossible, don't have any device with 5Gpbs bandwidth for home solution today. You can arrange maximum 1gigabit...

@Livan Impossible. Ethernet limit of M9 is GigE (1Gbit), Wifi 5Ghz 867mpbs (0,8gbits), Wifi 2.4Ghz 400mpbs (0,4gbits). For 5Gbits Fiber you need 10GigE ethernet interfaces and Wifi X is limited today...

@IanWaller03 On D7, linked put main deco in fixed dhcp. After this put IP of main Deco on D7 DMZ. In deco app redirect ports to dvr.

@Saurabh_S There is no correct distance between the decos. What you should always measure is the SNR (Signal / Noise ratio). For your network to function in the best way, 24db is the minimum SNR...