Welcome to the community @goehler
It looks like Varnish is rejecting requests to the acme challenge URL. Check those rules to ensure it passes thru to your server.
curl -6I www.cikoriehaven.dk/.well-known/acme-challenge/Test123
HTTP/1.1 403 Forbidden
Date: Thu, 07 Jul 2022 14:10:15 GMT
Server: Varnish
X-Varnish: 441887759
Content-Type: text/html; charset=utf-8
Content-Length: 7
Connection: keep-alive
You also have inconsistent DNS setup for your apex and www subdomain. I see your www redirects to the apex so this will be a problem (probably).
nslookup www.cikoriehaven.dk
Address: 77.111.240.180
Address: 2a02:2350:5:102:80a2:8aac:62e4:df73
nslookup cikoriehaven.dk
Address: 178.62.241.119