Yep, you can’t publish over HTTPS reliably without that setting being enabled. It’s why it warns you every time you visit the dashboard that it has to be set.
As you’ve not shared your site URL we can’t look at the certificate to verify if you’ve configured it correctly, but that error suggests you’ve missed a subject alternate name. It’s only going to be used for the redirect, but once you’ve corrected your certificate the error will go away.