Hello @agh10 ,

Welcome to our community.

Here are some troubleshooting steps that can help address this:

1. Confirm the router maintains a stable connection on its own.
Disconnect the extender entirely and check if the router stays connected to the internet for an extended period. This helps confirm the issue is extender-related.

2. Update the extender's firmware to the latest version.
Outdated firmware can cause instability. You can do this through the Tether app or the extender's web interface. (Guide: https://www.tp-link.com/support/faq/1406/)
 

3. Keep the extender away from interfering devices such as metal objects, microwaves, fish tanks, or Bluetooth devices, as these can affect stability.

4. Reset and reconfigure the extender.
Use a pin to press the reset button for 1–8 seconds until all lights turn on momentarily. Then open the Tether app, tap the "+" button to add the extender, and follow the setup instructions. (Guide: https://www.tp-link.com/support/faq/1373/)

5. Optimize your router's Wi-Fi channel settings to reduce interference:
• 2.4GHz: Use channels 1, 6, or 11
• 5GHz: Use Band 1 (channels 36–48)

Best Regards.