Issue Changing Heading 1 Font

I am able to change the font style of everything except header 1. When I select a different font, the dropdown menu registers the selection, but the font on the website doesn't change. Refreshing the both the squarespace client and actual website does not change anything. Does anyone else have this issue or a fix?

Squarespace Customer Care should always be your first stop for questions about your site as we cannot logon to your site to troubleshoot issues. You can reach out to them here.