Hi there,
Thanks for writing in. Sorry to hear that you’re having this issue. It seems that your hosting provider doesn’t allow for cross origin (which means cross domain requests are disabled).
Could you please try adding the following rule into your .htaccess file and see if that works for you.
Header add Access-Control-Allow-Origin "*"
Header add Access-Control-Allow-Headers "origin, x-requested-with, content-type"
Header add Access-Control-Allow-Methods "PUT, GET, POST, DELETE, OPTIONS"
Once you’ve done that, you should have a .htaccess that looks similar to this.

Alternatively, try adding the following code into your functions.php file.
add_action ('init', function(){
header("Access-Control-Allow-Origin: *");
});
Hope that helps.