for security its recommended to keep enabled this protection.
Quote:
Yes, you are having this problem since the brute force protection is enabled in your server. You can disbale this following those steps: WHM >> Security >> Security Center >> cPHulk Brute Force Protection.
just enter your IP address as Trusted Hosts List in brute force protection & you won't be blocked again.
i also have the same problem before 6th months & i did this after then i never blocked again by brute force