I cannot add G-mail widget to my home screen.

[AC Question]

When trying to add the g-mail widget to my home screen I drag the icon as directed. I am then prompted to select which account I would like to use, and which folder. After going through the selection process, nothing happens. There is no widget in the space directed, it's just empty. The screen I've tried adding it on is completely empty so it is not a matter of space for the widget to fit on the screen. My phone is a Galaxy S4 version 5.0.1.