Hi Bharath,
I tested the forum thread subscription with gmail, hotmail and yahoo accounts and everything works fine. I looked also at your xceed account and nothing seems to be wrong.
But, just to be sure, can you please create a new account with a different email address and subscribe to some of the forum’s threads that you want to receive? Like this, we can check if is a problem with your actual xceed account.
Please replay to us if you experience the same problem.
Thanks,
Augustin