Hi Novart, it sounds like your mailbox has been blocked. Please reset the password to a new one you've never used before. Once you've done that you should be able to send mail normally again. If not please let me know.
Ady
Please log in to My Account if you need to view or pay your bill, manage boosts and track your usage. From My Account you can also check your connection and test your line for any issues in the Service Centre.
