Only one potentiometer at a time...

[SodiumAKN]

Hi ! Please forgive me if the translation is approximate...
Attention, Newbie in the place!
I have an OpenDeck L card, obviously everything seems to work but I have a problem, I can only get one potentiometer to work at a time, if I connect two, only one of the two works. It happens that when I restart the card, it is the second potentiometer that works, as if the card took one at random.
Someone can help me ?

THANKS.