Account Blocked for ZohoMail

Account Blocked for ZohoMail

Hi I have an email address victor.chin [at] axp [dot] com  [dot]  my which is hosted by ZohoMail but now my account access has been blocked.

Can you please enable my account back again? I am not receiving important emails.

I received the following message when trying to send an email:-

Unable to send message;Reason:554 5.1.8 Sender Address Blocked

I have already deleted my email messages Please do help.

Thanks!