If you want to disable redirection to SSL connection while accessing WHM, cPanel, Webmail, please follows these steps.
Login to WHM >> Tweak Setting >> Uncheck the following options under Redirection.
Always redirect users to the ssl/tls ports when visiting /cpanel, /webmail, etc.
Also you have to uncheck the following option under Security in Tweak Settings.
Require SSL for all remote logins to cPanel, WHM and Webmail. This setting is recommended.
Also you can disable those options from the shell.
SSH to the server as root.
Open /var/cpanel/cpanel.config and set the following options to 0 (zero).
Save the file and exit.
If you require help, contact SupportPRO Server Admin