Like the workouts but not the usability

I do like the workouts and the videos explaining the moves but I dont like the usability of the app in that it loses my progress quite often. I have done 2 workouts and wanted to complete my 3rd to get a star and it lost the previous two so I have to start from scratch. I also dont like the fact I have to log in EVERY time. Also, when learning the moves you should just be able to click on the move to watch the video, not have to watch every video before you get to the one move you dont already know. I also think the skip rest button should be bigger so its easier to click on when doing the workout.

SunLeo79 about Emily Skye's Workouts, v1.1.2