coincidentally, i use a calcium and supervite seperately right now, but it has been about 6 months +/- so my calcium+ is supposed to get here next weekSame thing happened to me when I got my year old pair in November. Got my first eggs quickly but they weren't the first. Infertile as they were for the seller. It takes azureus a while to get the hang of it. Everyone has that complaint. Don't take it personally. Good eggs will develop so you really can't do much wrong. I barely clean my eggs off. I just take the petri dish out and put them on top of lightly damp paper towels in a container with air holes. I spray it quick and leave it. I'll spray it a bit here and there but don't want to soak them.
I got another 8 eggs today. I have a total of 26 eggs right now, 15 tadpoles, and 2 froglets from the pair. They're really doing well for me and the tadpoles are healthy. Frogs are healthy too. I'm noticing healthier breeding all around since switching to Repashy Calcium plus (ICB) as my sole supplement. I used to use a alternating schedule of Dendrocare, Repcal, and herptivite. I've dropped them all as after talking with Sean Stewart about them doing the same thing, I'm confident that the repashy covers all the bases and the others don't need to be alternated at all. With that 3 supplement rotation I still got a vitamin A deficiency in a couple tincs. Since switching it's gone. I thank the beta carotene and retinol in the ICB as also brightening colors a bit.
If you haven't tried this I suggest you do. Will be a good start for breeding your pair.