Image uploaded are 403 on internet

Hi,
The pictures linked on the page are uploaded and visible in the media library but unlike the other posts, they are not displayed online
The featured image is also not visible when the post is being edited. It is unclear what could be the reason as the images have all the same level of authorization in the upload folder.
I have tried to remove the hotlink protection, etc
I recently updated to WP 6.0 and PHP8.1
It is unclear how this would have affected the access rights of these particular images and not the ones from the former post for example
https://www.plasticatbay.org/2022/03/31/ocean-plastic-recycling-in-north-highlands-challenges-and-solutions/

Thanks for the help

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