When you did the ratios did you do it by weight? I do 1:1 by weight. I do get condensation in my clutch boxes, but not enough that the eggs look soaked or water is pooling. If you squeeze the vermiculite, water should not drip out.

For the clutch you still have, I would lightly dust the eggs with athletes foot. If the vermiculite is more wet than it should be, I would prepare a new batch and dry off the tub.

When you say flex seal, do you mean press and seal? So there is an air tight seal on the tub the eggs are in? I have had the best luck with a sealed container, rather than one with ventilation and trying to maintain the correct humidity from water in the incubator but I know some people do it like that and it works fine.

Was the tub, light diffuser, and vermiculite sterile? When you have a warm, damp, dark environment, mold is going to grow like crazy if there is something to set it off.

Sometimes fertile eggs go bad despite doing everything right because something goes wrong in development, and getting the bad egg out quickly can prevent the rest from going bad. This is a lot easier to do if you separate the eggs when they are laid. Once the mold is growing, trying to remove the bad egg from a bunch is going to send mold spores flying around, so treating it with fungal powder is probably your best bet. For the future, you might get some liquid skin to have on hand, try your best to separate them without tearing them, and if there is a small accidental tear, the liquid skin can help is seal up. Slowly and gently for best results trying to get them apart. If you catch them quick enough after being laid, they might not be stuck together at all yet, but you risk stressing mom out badly and causing egg binding if she isn't fully done. Olympus reptiles has a good video on youtube about how to get the eggs apart https://www.youtube.com/watch?v=5asswS3kIwI

Sorry you are having a rough start to breeding. Sometimes it takes making some mistakes before you can get it just right. Hopefully whatever is causing the problem, you can pinpoint and correct before the rest of the eggs go bad, but if not, don't beat yourself up. Practice makes perfect.