If your application cannot connect to the database please make sure that:
- Your application is using the correct mysql hostname: localhost
- Your application is using the correct mysql database / username / password.
- Don't forget to specify your mysql username and database with the prefix yourusername_ in front of its given name. For example your CPanel username is Yadonia and you have named your database YadoniaCMS. In this case you have to refer to your database as Yadonia_YadoniaCMS;
- Your application is connecting to TCP port 3306.