I have been using 8pen on my Rezound since I installed it last December.
I love 8pen and have been using it exclusively.
It has suddenly stopped displaying and all I get is a regular keypad - that keypad does not even have the 8pen link that used to show.
I've tried checking everything AND even uninstalled 8pen, bought it new, and re-installed it.
Still no 8pen even though the app shows in my applications list.
Don't know what to try next.
I miss it and want it back.
It's biggest advantage is that once you're comfortable with where it is, you can type without having to look at the phone.