Social settings image won't save | Troubleshooting All in One SEO Pack Pro | Support | Semper Plugins

For whatever reason, the image I chose to to use for social is broken when it gets shared. So I just tried to use another image but it won’t save. When I tick it and hit update it just goes back to the first image, the one that’s broken.

EDIT: Actually I’ve got it to save now, but the broken image is still showing when it gets shared. I can scroll between two images – the broken one and the one I want but obviously my readers aren’t going to do that. What could be the problem?