Your domain is getting routed to this page for one of 2 reasons:
1) there has been an issue with the rebilling of your site
please login to your site admin via myshopkart.net/yoursite/user and verify your billing history
2) you have not logged into your myshopkart site admin domain settings area and specified the domain your
myshopkart site should be using - do that now and within 20 mins your domain
will be working.
If you feel this message is in error, login to your site admin via myshopkart.net/yoursite/user/,
create a support ticket and support staff will look into it ASAP.