I'm so sorry to hear that Discusion

Did you take the last egg and put it in a fry trap?
I believe my male ate the first lot, but only after they were hatched, that's why I stole his eggs second time. It was a nerve wracking experience to be a foster mom for the eggs though, so I'm not sure I would recomend doing it....
I noticed that the eggs didn't hatch at the same time, one or two hatched on day 5, some on day 6 and the last ones on day 7. Could it be that the male has a buildt in clock that tells him that eggs are no good if they're not hatched within a certain time, and he thinks the eggs are bad if it takes longer? Pure speculations from my side, and probably useless information though....
I'm so sorry this happen! I know you've waited for a long time for this
It might be just inexperience also, or maybe he didn't feel secure and therefor ate them? When my male ate the eggs he did it during the night. I have another male that wants to be the alpha male, maybe he was harassing him thus making him insecure enough about the eggs safety that he ate them? Do you have another male that is often fighting with your alpha male?
I know you must be devasted, but try thinking ahead. I'm sure they will give it another go now that they have spawned twice already!