I am working with the Avery-theme from the Site Library. I have noticed a strange issue. I upload images, they stay in my media library, I put them into pages, they are visible in Gutenberg, but they disappear on the front page when I have published. Something which seem even more weird is that they do not always disappear, but seem to be more likely to disappear when put towards the right side of the page, rather than on the left.
I have included login information for anyone to take a look at this.