403 error and index.php file becomes empty after upload

Please read Why are my files deleted after uploading them File Management and FTP > Sometimes, when you upload a file, the upload is completed but the file is deleted immediately afterwards. This is usually caused by one of the following issues: The file is not in a htdocs folder All websites files must be uploaded to either the main htdocs folder, or to the domain specific htdocs folder (like example.com/htdocs). You cannot upload files to other directories on your account. If you try to create or upload files anywhere else, they will be deleted automatically. The file type…