App keeps crashing on iPad Pro

I've been editing a couple of videos and everything was fine. I'm trying to put the finishing touches on one, but it keeps crashing. Sometimes right after tapping on the video, sometimes after pressing play and sometimes when I try to add something to the video like a title. This is extremely frustrating. Please help. Also not the first time I'm having this problem with this particular app! I thought it was fixed in an update, but apparently not.