EDE: 22 (No Reachable Authority)

we are having problems on changing NS to Cloudflare from Aruba for domain annamariacammilli.com

; EDE: 22 (No Reachable Authority): (at delegation .)
; EDE: 23 (Network Error): (94.177.210.13:53 rcode=REFUSED for A)

Can you verify how to solve this problem?

dig a annamariacammilli.com @1.1.1.1

; <<>> DiG 9.18.1-1ubuntu1.1-Ubuntu <<>> a annamariacammilli.com @1.1.1.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 7303
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
; EDE: 22 (No Reachable Authority): (at delegation annamariacammilli.com.)
; EDE: 23 (Network Error): (94.177.210.13:53 rcode=REFUSED for annamariacammilli.com A)
;; QUESTION SECTION:
;annamariacammilli.com. IN A

;; Query time: 48 msec
;; SERVER: 1.1.1.1#53(1.1.1.1) (UDP)
;; WHEN: Wed Jun 01 18:23:00 CEST 2022
;; MSG SIZE rcvd: 156

Have you activated DNSSEC in you CF account? It appears you haven’t:

I can see it working now. When you redelegate a domain, you need to make sure that the domain is still being served by the original set of nameservers until the previous delegation expires from cache (depends on the delegation TTL). Alternatively, you can purge it from cache of the resolvers that support that functionality (e.g. https://1.1.1.1/purge-cache/)

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