@dippy Hello, the Deco uses WPA to protect the security by default; The password is optional, If you do not want to use password, you can delete it and save it as empty. Or is there any other...

@Ddds Hello, you can block one device from accessing internet. Open Deco app, go to more-blacklist and add the device you want to block intenret and hit save. May it help and have a good day.

@Bluess Hello, you can give it a go by exchanging the locations between FRF2 Deco M5 and BRF1 Deco M4; Meanwhile, you can exchange the locations between FRF1 Deco M5 and BRF2 Deco M4 to give it a go....

@ankurshah Hello, please move the second Deco closer to the main unit and ensure that the led is blinking blue. Then turn on the bluetooth on your cellphone and add it. If still failed, try to...

@Winks Below is the instruction to setup parental control on the Deco. https://www.tp-link.com/support/faq/1598/ You can add the advertising domains under Filter level-APPs/Websites page. May it help...

@Gray_Blue7 it is a test