I installed the app and signed up for a free trial. When I open the app all I get is a screen saying Enter the email address you will use for HBO Now . There is no on screen keyboard. Luckily I have an external keyboard but after typing my email address there is no submit button or anything. Pressing the center button just adds a space to the end of the email.
At this point I'd like to know just for the sake of canceling before they start charging me $15 a month for apparently nothing.
I had this same problem. What I had to do is enable the on screen keyboard, which then featured a "go" button or something like that which finally let the login go through.