Latest update was released with a bug that causes ad on right side of screen to hijack the entire screen when opening an email for reading other than the email previewed when app is first opened. Ad expands to fill the screen and cannot be dismissed so the app has to be killed. App was very obviously not tested properly before release when a bug that renders the mail reader useless is allowed to be posted to the Apple App Store. This needs to be fixed ASAP. Otherwise the app will be useless to anyone using it as their email client on the iPad.