I have unblocked your IP address. You should be able to access cPanel now.
In future please do not try accessing the server using WinSCP or another SSH client, as you will probably be blocked again.
There have been several members who have complained that their IPs have been blocked.
I don't think people believed them. They were told to clear DNS, etc, etc.
Yes, there are automated systems in place to protect the servers from attacks. The OP probably triggered one by repeatedly trying to login using WinSCP.
Generally if they can't access the server directly, but it works find through a proxy, they are blocked. Although they should flush DNS first to make sure.