Posted by: @alvina

@itesla,

The main reason for the issue is that the files are not available by URLs. Once the files will be available via URLs all will work fine. The differences between the Advanced Attachment enable or not is the following. If the Advanced Attachment is disabled the images are just a clickable link. So to see the images you'll need to click the URL and it'll open the images. When the Advanced Attachment is enabled, the old attachments are being displayed with   <img src =""> tag and the lightbox.

Currently, in your case, the files are not available via URLs, so it cannot display the <img> tag properly, as far as the src attribute is not correct.

We guess there is a conflict with the .htaccess file. So we recommend you to contact your hosting support and let them know about the issue.

I contacted SG support and this is what they say. 😀

I am afraid that the issue is related to the application itself and you need to contact a professional developer who has the knowledge to investigate the case further and provide you with a permanent solution. Of course, if there is a change we could apply on the server side, we would be more than glad to do it on your behalf but in this case, the issue at hand is going beyond our scope of support related to server-side problems.

Not sure what to believe further, everything was working don't know what went wrong.