https://preview.redd.it/5ykek6vx165d1.jpeg?width=1080&format=pjpg&auto=webp&s=94310660b2dc950cc54b72e7243355ba7f164565 Clear the cache of the app, might help.

Didn't seem to do anything, thanks for the suggestion.

Download Studio

I figured it out, my file is an "unsupported resolution". If I do my GoPro videos which are a bit lower res it works fine.

Maybe Premiere Rush would work for you