I have host mapping set up but when I visit my help center, Zendesk redirects me to
To ensure that all the settings are adequately complete, follow the instructions in the article: Host mapping - Changing the URL of your help center. For host mapping to work, have the hosted SSL setting enabled, as well as an SSL certificate uploaded to your Zendesk account.
Zendesk can provide you with an SSL certificate for your Zendesk at no extra cost. Alternatively, you can obtain a new certificate from your web hosting provider and upload it into your Zendesk account.
Authenticated agents and anonymous users will see the
https://yoursubdomain.zendesk.com URL on the login page.
For further information, see the article: Preparing an SSL certificate for upload to Zendesk.