i had a 2011 256 so i have some experience with this. what i’d do is back out all the screws just a bit, then tap them gently with a hammer or something and usually the faceplate would start to give. (rotate between all 4 screws so you’re pushing the faceplate out evenly on all sides.) make sure u do this over a bed or something soft… u have to be really careful you don’t damage the enclosure.
if the enclosure is super tight on the faceplate like this, once u get it out, u might not be able to get it back in without some sanding. just a warning, u might want to wait and see what @tehn says.