Hello, i gave this a 2 star because i can't even install and open the app properly. It was working fine few weeks ago until last Saturday. I can't even use it and now i am worried that i can't even attend my morning class today. I tried shutting down and restarting the phone but it won't work,i tried uninstalling and installing it again a few times but it wouldn't work i also tried removing apps but it didn't work too.