Hi, I need help. I use a BB 9800. Since my upgrade from 7.1 to 8.0, I can't seem to enter to the next line(paragraph) while typing on an editing window. I've tried redownloading and reinstalling the app but it doesn't help. Pls, how do I resolve this or revert to 7.1. I think I'm better off with 7.1 pls