Some items exceed the file size limit

I'm having trouble importing images into the social media creator, on both Facebook Ad and Instagram post. Basically no matter what size image I try to upload (1.7 MB, 3.9 MB, 5.4 MB, etc.) it says they are over the file size limit. The only one I've had success with is a 24 MB image. Which I don't understand. All images are jpegs, and I've tried quitting and restarting Chrome, as well as clearing the cache in chrome with no success. Anyone have any thoughts?