Jpg files not working on iPhone

Hello, I have been using Anki for almost 2 years now, and now my mobile app on my iPhone X doesn’t want to accept .jpg image files but instead I get this small box

On my computer I have no problem to see the images, has anyone got a suggestion/solution to this problem?

Please see the video on https://faqs.ankiweb.net/media-files-may-take-time-to-sync.html