We are unable to process your request

We are unable to process your request

I am trying to sing up for Email hosting but i am unable i am getting this error


we are unable to process your request please try after sometime or contact at support@zohoaccount.com
  what is wrong ? why i am not able to sign up ? Before i already had an account but i deleted that account and i tried to sign up again and go that problem from yesterday and still I am getting same problem.