What happened, Delta? – Fly Delta Review

I've used this app for years. It's always been straight forward and relatively easy to use. I flew last week and when I went to check-in I discovered that the app crashed each time I tried to log-in. I read many reviews stating a similar experience, and I assumed that the app dev team would be putting out a fix ASAP. Not the case, I fly again tomorrow and still app crashes at each log-in attempt. What happened, Delta?
Review by karadaniel on Fly Delta.