I can Put in my credentials, get two step verification and then the app just sits on a white screen and says loading - forever... will not open
I fixed the problem with a work around. After you type your username and password, do not use the sign in button. Instead, after you enter the password, use the return button on the keyboard and this will properly submit the login form and you should then get prompted for the 2-factor authentication .
My issue is w/ iOS12 on iPhone Xs. Enter a username and password and the app returns asking you to "Please make sure you have entered both a username and password" OKDespite having entered the correct username and password.
Retrieving data ...