a (hopefully) quick clarification.
My blog utilises blog.companyname.com and is hosted with siteground.
Recently the Lets Encrypt cert did not renew, and when I contacted their support, they stated it was because I did not have “www.blog.companyname.com” - stating that the www was required.
www.blog.company.com is not in use, and have never been used by this site. As far I know, it has been successfully updating for 12 months+
I cannot see a requirement in the doco for www to be present - and it sounds a bit off.
Am I missing it in the doco? or is the support tech from siteground incorrect?