In the case of a German domain with umlauts (ä), the Cloudflare name servers cannot be stored. Error message see below. The domain with the same name with ‘ae’ could be adjusted without any problems.
The support of the domain registrar said that Cloudflare had to solve this - I was now referred to the forum by Cloudflare support. How can I fix this dilemma now?
COMMAND = MODIFYDOMAIN
ADMINCONTACT0COPY = OWNERCONTACT0
BILLINGCONTACT0COPY = OWNERCONTACT0
DOMAIN = żxxxxx.de
NAMESERVER0 = bob.ns.cloudflare.com
NAMESERVER1 = mariah.ns.cloudflare.com
OWNERCONTACT0 = P-KGA107606948
TECHCONTACT0COPY = OWNERCONTACT0
CODE = 549
DESCRIPTION = Command failed; 53300102912 Nameserver error [ERROR: 901 Unexpected RCODE (target, entity, RCODE) (bob.ns.cloudflare.com./2a06:98c1:50:0:0:0:ac40:2168:53, xxxx.de, REFUSED)]
PROPERTY[STATUS] = ACTIVE