Hello,
I have had this issue since I first installed and setup enhance that if I enabled force SSL before requesting the certificate it would fail as it could not access the the .known folder to verify the domain. I initially chalked this up to an issue with trying to enable forced SSL before setting up the certificate.
Now however 90 days later all of my certificates are failing to renew for the same reason and therefore silently take the websites down as the certs fail expire.
Does anybody else have this issue, or is it just my instance?