According to your guidelines, the image in the popup box on the front end of the site is displaying properly.
Regarding the operation of astra using a child theme, a site like mine has already been built and I have not operated a child theme, as you have mentioned: you can either use child theme or use some custom snippets plugins to prevent this.
Can you guide me on how to do this, because I can't avoid updating my wordpress with the ASTRA theme!