Wierd Bluetooth keyboard pairing issue

When pairing I get request to input the 6 numbers and I successfully do it until the last number, when nothing happens (for example, I get number 554019 and i manage to input 55401 and then it wont register the 9).

I tried reinstalling bluez and blueman, restarting the pc, connecting through bluetoothctl,... and I can't manage to get it to work.