After you reset, you must run the setup again. Don't panic when you see the unsecured "TP-Link_Extender" network—that’s just the device asking for your help to get re-homed.
Instead, after the factory reset, simply bring the RE705X next to your router and plug it in. The router should automatically detect it and ask if you want to add it to the mesh. If you set it up manually, you break the "seamless roaming" feature. The TP-Link RE705X is resilient. It is very difficult to "brick" (ruin) this device via software. If it is acting weird, a 10-second press of the reset button is almost always the cure. Factory Reset TP-LINK RE705X
Have you had to reset your RE705X due to a specific issue? Let us know in the comments below After you reset, you must run the setup again
Unlike simply rebooting the device (unplugging it and plugging it back in), a factory reset wipes the slate completely clean. It erases your WiFi credentials, your custom passwords, and any saved settings, returning the RE705X to the exact state it was in the moment you pulled it out of the box. The router should automatically detect it and ask