Now that it has electricty, maybe the safe will take the card. Try the card.
Right!
Mr. Stick inserts keycard into another slot.

Cardreader accepts card! Immeadatelly after that, numbers became green.
Mr. Stick tries to set numbers now...
and it works!
Mr. Stick sets "636" code...
Nothing happens.
Following the logic, mr. Stick carefully tries to press remaining button, with down arrow on it...

*beep-beep*
And safe won't open. Seems that code is incorrect.