cannot connect to mysql database

[jmcg]

I have tried a variety of option but cannot get past the mysql credentials page. I have create user in mysql but none of these work. Any suggestions?

[Jo Morg]

Assuming you are installing CMSMS, assuming you are trying to install the latest...
Assuming also that you have read:

As mentioned in the requirements above. CMSMS requires a mysql database to store data, and user credentials to access it. The user account provided must have ALL PRIVILEGES to the database. You can normally create databases, and create user accounts for database from within your web host's control panel.

In https://docs.cmsmadesimple.org/installation/installing

I have create user in mysql but none of these work.

Have you created the database?
We need far more info about which steps you are taking, server environment, etc...