Database connection error

Your MySQL database username and password is your cPanel username and password. Have you recently changed your cPanel password?

Please check your script config file.

You can use a MySQL database with your PHP scripts. You need to make a database first in your MySQL databases section of your cPanel. Then use your SQL server hostname, which is listed on the left sidebar in cPanel, and cPanel username / password / and database name in your script installation config file.