Turn each screw counterclockwise (lefty loosey) 1/2 turn to loosen the latches by 0.25mm. Pull each latch with your fingers to make sure they are extended and then try the fit on the grille.
Repeat up to four times (two full turns) as needed.
Important! Contact support before proceeding past two turns. If loosened more than two turns, the SnapPlate could become stuck in the grille and it may be very difficult to remove.