Was perfect, now crashes upon login – EVA Review

This app was great, I couldn't have been happier with it but in the middle of a trading mission the app crashed. I tried logging back in and it crashed immediately. After that I tried restarting and hard resetting my device but still, crash at login. Next I deleted the app and reset the device again before reinstalling it. This time I got past the login screen but after entering the authentication code it crashed once again. I don't know what else I can do and don't have the slightest idea what caused this initially but before this happened I would have given a 5 star rating, now that the app doesn't function at all I can't give it anything but 1 star.
Review by Dlosk157 on EVA.