@Maksymov Hi, to assist you efficiently, I've forwarded your case to the TP-Link support engineers who will contact you with your registered email address later. Please pay attention to your email...

@Ross-B Hi, thanks for posting question here. We may need to confirm some information to understand your situation better。 1.What is your exact network topology? What is the exact model of your...

@jiofiber5g Hi, thanks for posting question here. You may take factory reset and try to configure the range extender again via Tether app following this guide. If still failed, it is suggested to...

@KASTURI Hi, thanks for posting question here. You may follow this guide to configure your range extender via Tether app. It is also suggested to contact local technical support for direct help.

@Fireplace Hi, thanks for posting question here. Did you set up range extender mode or access point mode for the RE505X? Did you connect RE505X to the main router via Ethernet cable? You may take...

@OdinSKS141 Hi, thanks for posting question here. You may try firmware recovery follow this guide for this Deco. If it does not work, I am afraid this Deco E4 got defective and you may confirm...