iMovie for iPad not playing photos in movie

The iMovie I have created on my iPad will not play the photos previously loaded into the Show. This is after the iOS 18.2 update, but I don’t know if this is a reason. I have checked to make sure iMovie has been allowed to access photos in privacy and checked the iMovie app. I re downloaded the app and also restarted my iPad. Can anyone suggest how to fix this?

thanking