By default, cPanel is configured to disable a user after a certain number of failed logins via the cPHulk Brute Force Protection. As a result you will see the message "Permission denied, please try again."
To reset cPHulk, you will have to login on the server. If your account is being denied via SSH as well, login via the video display on the Tilaa Dashboard.
To disable cPHulk, use the following command:
You should now be able to login to cPanel again. Go to Security Center > cPHulk Brute Force Protection and click Flush DB. This will clear the list of failed login attempts.
Now enable cPHulk again:
It's possible to prevent this from happening again by whitelisting your own IP addresses.
Go to Security Center > cPHulk Brute Force Protection and open the White/Black List Management tab.
Enter your local IP address at White List (Trusted IP List) and click Quick Add.
In case you have forgotten your root password, please check the following item: https://support.tilaa.com/entries/23802037