Keeps crashing when trying to move someone to groups – aContacts - Contact Manager Review

This app used to work good, hence 3 starts instead of one or two. Not sure why all of a sudden when someone is under "unfolded" group I click on it to sort it to another group and at first it just wouldn't let me alter the group and now anytime I try it crashes as soon as I click on groups. Please fix. I do love the merging contacts to get rid of duplicates and stuff like that, and that I can back it up in the app first.
Review by Elliottfam11 on aContacts - Contact Manager.