Needs to be fixed!!!!!! ?

This movie maker is super fun..... For like one hour!! So when I got this app I was really excited to make my own movie thing but it started to glitch insanely after an hour! And I couldnt go back on my old project cause no matter how many times I tried it screwed up and I couldnt go on it!!
I had to get it again but wouldnt let me even put in the photos for the trailers!!!! Apple NEEDS to fix this now!

Rosies stuff about iMovie, v2.2.3