MyBB Community Forums - Could not select the database

Hello everyone

When I try to install the forum mybb 1.2.12 I always get the same error messaeg :There seems to be one or more errors with the database configuration information that you supplied:

Could not select the database 'forum'. Are you sure it exists and the specified username and password have access to it?
Once the above are corrected, continue with the installation.

Someone can help me solve this problem?
thank you in advance

If you are on CPanel 99% of the time the database name is preceded by your cpanel username, so if your CPanel username is picos, then the database would be picos_forum instead of just forum.

It should be the same way for the database user as well.

Hope it helps,
BMR777