My Ladder attempts did not reset today

My number of attempts remained at 4 after the rest today

I've had this problem a couple times before, I find that clearing the RAM helped me to get the reset. If you don't know how to clear RAM, back out of the app, double press home. You'll see a bar with icons for a bunch of apps, this is your history, clear it by holding on one of the apps and then tapping the red minus. Clear the history and open up the game again.