Hi there,
Thank you for reaching out to us!
This is weird: I don’t believe that this issue was caused by one of our plugins, but let’s investigate to be sure!
1- Could you please check your uploads folder and let me know if you find a .htaccess file inside it? I’m asking this because this user had a similar problem and it was solved by removing this file.
2- If you disable all of your plugins is the problem solved? If you change your theme to another one like Twenty Seventeen, are your images still missing?
It is also a good idea to contact your hosting provider and let them know about this issue you are experiencing, they may be able to help you to solve this problem as well!
If you have any other questions in the meantime, please feel free to let me know and I’d be happy to help as best I can!
Cheers,
Patricia