first: Awesome that there is a knowledge base available now. It’s really a feature which can possibly reduce the number of support requests we receive.
But: I would suggest to edit the homepage / login page which is available at e.g. support.example.com to feature a prominently placed link to the knowledge base. Possibly a two column layout with a big tile as a link to the KB on the left and the login form on the right.
Right now support.example.com would load the login page which does not have a reference to the KB at all. So, a user would have to create an account first before he / she would see the link to the KB in the navigation bar on the left.
I think it is a quick edit but would greatly increase the number of users finding the KB on their own without having to create an account.