Some of these website-in-apps drive me fucking nuts. They will switch you to the app, ask for validation through email, and then when you go to check the email, it loses your place in its internal browser, sending it back to the login screen, and so the number you've retrieved is worthless unless you know how to specifically minimize the app on the screen, which it will not tell you beforehand how to do. The bouncing back and forth is annoying and idiotic.