When you first start using the Swap Centre, for security reasons you will find that your account is temporarily restricted to a certain number of Swap Requests which you can make or receive. Once you reach a limit, your account is temporarily frozen for up to 10 days. As you begin to use the Swap Centre more frequently you will find this restriction will ease.
Apologies for the inconvenience caused but this is one of our safety precautions we put in place to prevent against fraudulent users.