I did find and fix the problem. It was in fact a false positive between Abantecart and Mod_Security.
There were three wrong permissions,
The permissions could not be reset with ftp, they had to be changed using the Terminal.
Although I'm happy that I fixed it, maybe this post will help someone in the future, I've decided to delete Abantecart due to the lack of resources available for free. I feel that Abantecart would have been so more popular if the resources were more widely available as they are for other shopping cart platforms.
There were three wrong permissions,
- Index.php inside the root directory
- Vendor Folder
- System/config.php
The permissions could not be reset with ftp, they had to be changed using the Terminal.
Although I'm happy that I fixed it, maybe this post will help someone in the future, I've decided to delete Abantecart due to the lack of resources available for free. I feel that Abantecart would have been so more popular if the resources were more widely available as they are for other shopping cart platforms.