Not finding the database no matter what!

I’m installing and no matter what WP can’t find my MySQL database. It says my user name and password are ok, but it can’t find the database. I called it “blog”, and my cPanel adds “ndibcxr” before everything as that is the admin name. Here is the portion of code:

// ** MySQL settings ** //
define(‘DB_NAME’, ‘ndibcxr_blog’); // The name of the database

In cPanel, my database is called the SAME EXACT thing. I also tried putting the user in front of it (ndibcxr_gideon_ndibcxr_blog) and that did not work. What do I do?