@Tigerpanzer02, please don’t use the [spoiler] tag for your posts here. It causes them to be obscured by the forum and makes them harder to read.
@jsha, this host is now behind CloudFlare and is trying to do an HTTP-01 validation that gets redirected by CloudFlare to
https://www.cc-sw.de/.well-known/acme-challenge/8kGDbO08LBoxIwB5HaBnEGkrmIMMEjCYHi1bx2BPD-o
which showed “Error getting validation data”. What could cause that now?