Sometimes a louver in the evaCHILL grill can become dislodged during transportation.
There is what you can do about it: please, check if a small pin on the louver (marked red in the picture below) is intact.
If it is, please, remove the cartridge (please, follow this instruction: How to replace the evaCHILL cartridge to do that) and then follow the steps shown in the video below. Please, note that you need to slightly bend the louver at the end so that the pin gets in the nest and doesn't break.
If the pin is not intact, you can safely remove the louver using a technique similar to the one in the attached video. It will not affect the cooling.