My b2evolution Version: 2.4.6

I had to change my webhost password because my site was hacked. That automatically changed my MySql password. Consequently b2evolution will not start because it has the wrong MySql password.

I was able to start install/index.php, and it shows the MySql configuration including username and stars for the password. It has a link that says "update your base configuration", but when I click the link, the page just re-displays. It does not let me update my MySql password or anything else.

How can I update b2evolution with the new MySql password?

I am running b2evolution verson 2.4.6.