pic would help as blizzard lizard very informatively added "mold is bad" but dose not mean it's dead. they do normaly have brown specks if not found right away. post some pics.
good luck with that I've been trying to post pic on the post's for a while I can get them in my profile but not on post I'm not a computer person as you can tell.
so now the one egg has so much mold on it and i think there is a crack in it. like its open. but the other seems to be fine and healthy, can a female gecko lay one fertile egg and one infertile??