Can't connect WiiU Pro Controller to WiinUPro

WiinUPro pairs successfully, but then immediately disconnects and the controller turns off. Then when I click connect, it says "unable to connect device"


<img width="310" height="456" alt="Image" src="https://github.com/user-attachments/assets/16c1134a-25b7-4c98-90d8-a7399a8e9fdc" />