Hi Jugal,
I tested the import demo on a different server and it works. I tested on yours and the error points to admin-ajax.php file. Can you ask your hosting provider to give access to it. Due to security concerns, hosting providers sometimes are blocking the access to it.
Kind Regards,
Alex
Hi,
Can you please check the web server logs? The error I found is "cURL error 28: Connection timed out after 1001 milliseconds". It may because of server firewall settings.
Kind Regards,
Alex