Can’t even make a movie. – iMovie Review

For some reason every time I open IMoive on my iPhone 7 Plus, it goes perfectly normal, but when I try to make a movie or trailer I can’t tap on it , and when I click cancel it doesn’t cancel. This was a rather short review but I don’t know if this was just a problem with my phone, or the app, I just hope this could be fixed.
Review by Retro596 on iMovie.