Some Roku web pages do not deal well with small screen formats like phones and maybe even tablets.
As has been suggested earlier, try switching between portrait and landscape orientation, or vice versa, on your device. Also, if your browser gives this option, try turning on desktop view.
Or, just go back in on a desktop or laptop computer.
Ok here is an update. First thanks for all the reply's. I used my laptop and got a continue button at the bottom of the promo offer page which does no show up on a iphone at least. I did not try turning the phone, just went straight to the laptop and it work without issue. Thanks!
@Ducsoup- Thanks for reporting back and marking solutions, as it may help others.
Flagging this to bring it to the attention of Roku employees @RokuDanny-R, @RokuKariza-D, & @RokuMary-F. Alert your web designers please.