Failed to pair (idk why)

[OxoGhost01]

Hey !
So i wanted to connect my wii u pro controller, so :

• i started the "sync" mode on wiinupro
• i pressed "sync" until the controller appears in wiinupro
• it says successful
• and.. the controller just shut down

Even if on wiinupro the controller is showed as paired or even connected, my controller is off, and i can't connect it for real to wiinupro.

Any idea why ?

[KeyPuncher]

This is eerily similar sounding to the issue seen before where repairing to the Wii U tends to solve it.

When you press a button on the controller do the LEDs just flicker once or multiple times?
Also, what does Windows say about the device?

If it shows up in your windows devices try removing it.

[OxoGhost01]

Connecting to the wii u did not solve the problem :/
When it try to sync, it just stops blinking just before the app saying "Succefully paired", then, impossible to connect

The controller do not appears in windows devices.