@Sakrrr Hi, can I have the model number of your range extender? Have you tried to update the firmware through the web interface, instead of the Tether APP? How to update the firmware of Powerline ac...

@AhemadEXTEXT123 Hi, what is the model number of your range extender? It is suggested to refer to Has connected to TP-Link extender but no internet, what can I do? Best regards.

@Decorer247 Hi, nice to see you again. Deco X20_V3.0 is 2*2 MU-MIMO for both 2.4GHz and 5GHz. It could be told from the current wireless link/PHY rate. Most of the mobile devices are also 2*2 MU-MIMO...

@Huang91 Hi, welcome to the community. Did you purchase the Deco X80-5G from the local market? Will it keep a stable connection if we set the Network Mode to 4G only? By the way, May I know who is...

@Mf0 Hi, welcome to the community. For the DSL backup connection, I guess you already have a DSL modem and the new device will be connected via an Ethernet cable? I'm afraid there hasn't been a Deco...

@jimbrown1 Hi, welcome to the community. I remember that Archer A7 doesn't have any "Network Optimization" so I don't think your current issue is related. Have you tried to disable "Private Address"...