The blog section needs a pop up warning to tell people NOT to select a domain or subdomain that has a redirect set up on it within the HL system.
Maybe a pop up message can appear letting the user know that due to the redirect done on the HL platform, choosing the www. subdomain option would cause an error page for the blog that they are connecting he domain or subdomain to.
It would be even better if domains/subdomains that have a redirect set up do NOT show in the dropdown menu as well. This would help prevent people from connecting they domains/subdomain, then thinking there is an issue with their blog or domain and wasting hours trying to figure it out.