Mautic Installation - Database Setup

When I try to finish my setup on MAUTIC
I get this message. An error occured while attempting to connect to the database: An exception occured in driver: SQLSTATE[28000] [1045] Access denied for user my user name go here’@‘localhost’ (using password: YES)
Can any tell me how to fix this problem.
My hosting provider is hostgator.
Any help would be grateful.
Thanks Vic.