Images not visible in some blocks

Good morning everyone,

I really like this theme, but unfortunately I’m having some problems with the images.

I use a plugin called Modern Image Formats by Performance Lab. This plugin automatically converts JPG and PNG images to AVIF when I upload them from my computer to the library. I don’t know if this is the problem, but I wanted to point it out anyway.

The problems are as follows:

1) On the home page, with the “Magazine Grid Layout” widget, only the image of the last article written, which is basically the largest image, is displayed as a gray blur.

2) Also on the home page, in the “Magazine List” widget, the images are not visible at all, or rather, those of the latest articles.

3) On the blog page, only the image of the latest article, the largest one, is displayed as a gray blur, just like on the home page.

The strange thing is that in other widgets on the home page, for example in the “Category List” widget, the same images are displayed correctly, as well as on the blog page if it is not the latest article.

Thank you for your attention and best regards.

The page I need help with: [log in to see the link]