For the cPanel accounts which is hosted under shared server, try using the below URL to directly access phpMyadmin.
http://www.yourdomainname.com:2083/3rdparty/phpMyAdmin/index.php
Make sure you substitute yourdomainname.com with your actual domain name.
You will be prompted to enter your login credentials. You can login to phpMyAdmin with the same credentials you use for cPanel. Once entered it should take you straight to phpMyAdmin interface.
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