Great to hear from you. Sorry you ran into a problem, I’m sure we can solve it. Could you perhaps run the upgrade again so I can take a look? After the upgrade can you perhaps check that Customize > Theme Settings > Navigation > Header Menu is enabled. And if possible, please, send a link.
Thanks Chris. Has the site been updated now? I can see the menu but I can’t see the theme version because of the caching plugin. The theme demo seems ok, it’s running the latest version: https://demo.purothemes.com/polestar/. Do you perhaps want to reach out to me via email so I can send instructions for creating a temporary admin user account? I could then run the upgrade and check the issue myself and resolve it then.