I added the name to my former dns service (namesilo), and now the DNS is provided by netlify - but somehow ssl is not possible. I can reach the unsecure version of the page, as well as the netlify page.
however, can’t do what you suggested - I don’t have the “renew certificate” button in the certificate section because the domain “does not appear to be served by netlify”.
not sure what else I can do. I guess the nameservers with namesilo have been configured correctly, otherwise netlify dns wouldn’t work?!
I had deleted it and set it up again, but it didn’t appear to have helped.
strangely, when I try to reach it without the www (https://luerig.net), I get an errormessage from my old domain provider (ovh) - which shouldn’t be, because I had transferred it to namesilo a while ago.