I am trying to set up this Roku device. I got it set up physically but ran into a problem with authentication or whatever it's called. I tried to get them to send it by email. That didn't work and I switched to qr code. Oddly enough that worked by the same email address but the screen, which was supposed to have updated, didn't. When I try to leave the qr screen, it says that if I do that it will start over, which I don't want. Who can help?