86 votesKathleen commented
After 24 hours of not being able to use this OWA app, I contacted technology at my work and they told me this app is just "flakey" and showed me how to create a "native account" on my iphone (6) using the little mail envelope app on the home screen. You just add your work info. It's a short cut to work email; much quicker than using safari browser. They told me the problem is with the OWA app. (We are not alone...it is happening/has happened to a lot of people.) I've deleted the OWA app for good now.