Contacts may get locked out when they used invalid passwords for a certain number of times or any other suspicious activity. Contacts may also be locked out for any policy violation.
To view and manage locked out contacts:
1. Navigate to Contact List View and click Locked Accounts
2. In the Locked Accounts window that appears, you can view all the locked-out contacts with details such as Blocked IP Address, Last Logged-in Time, Domain Name and E-mail.
3. To unlock accounts, select one or more accounts by clicking the respective checkbox(es) and then click Unlock.