@MicheleZ Hi, Thanks for posting on TP-Link Community. Please test if the issue happens on both 2.4G and 5G. You can change to another channel and channel width. If the wired devices also have the...

@Noice_Folk Hi, Thanks for posting on TP-Link Community. Did you manually reboot the main router to let it work again? The abnormal LED lights on the RE mean it is disconnecting from the main router....

@Chris_lew Hi, Thanks for posting on TP-Link Community. You can change different Ethernet cables and different WAN ports. And please also check the link speed between the device and the Deco. Did you...

@MarcoVa Hi, Thanks for posting on TP-Link Community. Do you mean it is slow when you connect to the WIFI, or you are getting slow speed with Deco WIFI? Will all the devices have the same issue? I...

@RobbieC Hi, Please change Ethernet cable and test again. Besides, please also check the advanced settings like QoS and parental control.

@tgc_9012 Hi, The connection you want is possible when the Deco works in AP mode, And in this network topology, if only the router works as the DHCP server, then all end devices will be within the...