iMovie freezing on the on frames

Hi! I had the issue a lot of people seem to have had with music permission for Imovie during the last update. I followed through with the privacy setting reset which worked - the problem is that now, when I play a project, the audio goes on as intended but the visuals freeze on the first frame. So it's a still image all throughout the audio when it's supposed to be a n animatic, a series of images. When I open the projects to edit them I can click on the separate images just fine, but when I play it, only the image I've selected is shown despite cuts to other pics. I've tried restarting the ipad and stuff but it hasn't worked. How do I fix this...?