Hatching glitch

I’m trying to hatch a Mariage egg but the game keeps crashing on me shortly after I place it. Saying that something has gone wrong and that I need to refreash the game. My internet is working properly, everything else works, except for the one egg. It’s like the game doesn’t want me to have the dragon. I’m not sure how to fix this glitch thought so can someone help me please...? I even tried deleting the app and redownloading it but that didn’t work, so please someone help...