If you are hosting your Safeguard administration system with Locklizard then you need to contact support so they can unban your IP address. Please give this information to support when you contact them.
You need to log in to the master admin system – the master admin URL will look something like this: http://www.domain.com/server_url/ll-master/master.php
Then, under Settings > Login Attempts unban your IP and you will be able to log in again normally.
See page 32 of the Safeguard Own Server installation manual.