When using Centos Web Panel for a new account and installing Wordpress from CWP there is a bug if we choose the 15 characters key size and Aplhanumeric + Symbols.
After the Wordpress installation ends and we try to open the url a "Database error connections shows up". Double-checking the wp-config.php at home/account/public_html is confirmed that 'dbpassword' has literally this string as password rather than the generated at CWP Wordpress Install process.
When choosing the default method everything goes OK. (12 characters + Alphanumeric)
Best Regards