Microsoft Excel for Android

Previously everything worked fine, but why
then today, at the entrance to the application
he requested reauthorization.
When you enter this error occurs.
Due to the fact that the record is not logged, I can not fully function
to use and here everyone is lost the meaning of the program. I could not register account. At the last stage,
when you need to enter a verification word
from the picture, when you move the cursor to input line disappears Next button.
The page is not scaled, not
rolls, does not roll over. The app is awful.
It's impossible to register. Without the Internet it works extremely unstably.