Its obvious you have too much moisture and not enough air. If you are past week one your incubator where your eggs are should be at least 88 degrees.
Mold isnt good at all.
I have never had moldy eggs. The vermiculite should be moistened just untill it clumps together. You have too much water. You could uses a 1-1 ratio in weight so you will have a guide to go by. I wish you good luck and feel free to email me if you wish.