If your site is not displaying images due to a 403 error, try the following:
- Ensure the images in question are within a public folder.
- If they are in a public folder, there's a chance there is an SSL problem because public images shouldn't throw 403 errors (Forbidden/Access Denied).
We just solved an issue that related to number two above. The predicament involved an earlier mapping of a particular domain. For whatever reason (we're unsure), the generated SSL certificate was erroneous. After unmapping the domain and trying to remap it multiple times to solve the issue of the 403 error/broken images, we narrowed the problem down to the SSL certificate.
After deleting the SSL certificate and reading a new one, our problem was solved.