Coca Cola bottle

I’ve used the app for all of my general and airframe classes, was definitely worth the 10 bucks as I passed my general and airframe written test with it. However recently it’s gotten bad, the UI is very laggy, you click next question and it doesn’t move, also it doesn’t show your score or remaining questions anymore. The app is still able to be used but you won’t know your progression if it’s small progress unless you do the math yourself and it takes double or triple the time to do the studying because you have to click 2-3 times on the next button to get your next question