I see. No big deal with TablePress then. The link to EasyAzon: https://wordpress.org/plugins/easyazon/

I already tick the ‘upload_files’ capability before. I tested it and found that it works perfectly fine in custom post type but not the default posts type.

This is how does it look like in the default posts type.

Then in a custom post type, it works perfectly fine. So I guess it’s not due to EasyAzon plugin.

Please let me know if you need any more information.