Set cloudflare DNS to domain and A records to server IP I still see DNS_PROBE_FINISHED_NXDOMAIN

after set cloudflare DNS to my server and add A records to server IP I still see DNS_PROBE_FINISHED_NXDOMAIN

when I check DNS checker I still see nothing in A records

can anybody help me what is the problem ?
in dnschecker.org I see my NS records not updated in all location what is this mean

5 posts were merged into an existing topic: Some new zones not resolving via DNS