They aren't going to be good eggs every time. Just give them a chance to settle in, they will get it right soon.
Im feeding calcium plus ICB from joshsfrogs so i dont think that is the problem. It may just be im to impatient lol they are laying so i just have to wait for good eggs. Its not a age issue either I know the breeder well and hes a good guy. Dont hold me to it but i THINK he said the female was around 2yrs old and the male was younger. I cant remember.The deficiency could be nutritional.... It could also be stress related. Sometimes "very proven breeders" struggle at first when they get into a new enclosure. Time may be a factor. Also, it could be age related. A "very proven breeder" could be "very proven" because they were overbred for years without a dry season, have been worn out, and now that they're not producing anymore the seller was ready to get rid of them... any idea how old they are?
As far as keeping eggs moist, I'd let the frogs take care of that. Don't pull the eggs until a day or two before they're going to hatch. The frogs know what they're doing