ARB respone return NULL

[babyxitrums]

  Hi,  i've stucking on this problem. Everything works fine on my site and localhost yesterday but today when i came back to check out something. I got this issue (my localhost is still working fine). I can not update, create, update.....etc because the respone message is NULL. For example: When i want to get status of a subscription it should be:

My localhost:

http://i605.photobucket.com/albums/tt135/PhuongAnhzz/good_zpsec631ef5.png

but on my live site:

http://i605.photobucket.com/albums/tt135/PhuongAnhzz/bad_zps40e5ba82.png

 Is AuthoroizeNet blocked my site or something ?

[TJPride]

Be helpful if you could post the code you're using to create and pass the transaction to Authorize.net on the production site. You can paste into a code box (should be the fifth icon from the left when creating a post).