Cracked egg used wax, but not hatching

[Strange Hatter Farms]

Well since the egg developed obviously sealing the crack helped keep the embryo alive. I think it's possible that the wax acted like glue keeping the shell whole. I would have used a sharp paring knife just prior to lockdown and scraped most of it off. Hopefully, you won't have to deal with a cracked egg again and it won't become an issue.

No, it was developed I moved them on day 18