What happened?

I was enjoying this game immensely, however, upon launching it yesterday, it kept prompting for my iTunes password and once I entered it just to get rid of the annoyance, it kept losing my progress anytime I switched between apps. Eventually, after a couple of times, it crashed completely and all progress was lost. Cant even click on any of the files, now. Will delete and re-add to hopefully solve the issue.

jmarnat about Hidden Artifacts, v2.6.17