Diablo 3 Crashing while doing a set dungeon

I was playing the Demon Hunter Set Dungeon for Nataly’s Vengeance. I completed all of the requirements to master this set dungeon and then got kicked from the private game that I was playing. I logged back into my account and I did not receive that achievement for this for the Seasonal quest. I want to know if there is something that I can do or if I am going to have to do this set dungeon again.

Thanks for the info!