Sabrina, try what I did! click on the opposite of what you want, to reset it, then click on the one you really want. you shouldn't have to sign in again or anything, easy-peasy, really.

to sum up, click on the stylepc, then go back and click on the stylemobile (or type them in, if you have to). it should reset you back to mobile, ON mobile.

ETA: I agree, stylepc is too hard to handle on some mobiles! I was getting EXTREMELY cranky and frustrated! let me know if this solution doesn't work for you.