XF 1.5 Installing on HostGator


so I have a problem with installing Xenforo on HostGator. I've downloaded xenforo, uploaded it into a map, edited the permissions and started the install procedure, I created a database with a user and well... it won't allow me to continue after the "Configuration Builder" step.

I get an "access denied error"

This one:
The following error occurred while connecting to the database:

Access denied for user 'masterch_dbadmin'@'localhost' (using password: YES)
This indicates that your configuration information is not correct. Please check the values you have entered. If you are unsure what values are correct or how to proceed, please contact your host for help. These values are specific to your server.
I watched videos and read all the guides I could find and I still cannot get the installation to continue. Any ideas what I could do?