Did you transfer your domain from another Cloudflare account? That’s the only time I’ve seen the nameservers get mismatched like that. I’m not sure there’s a solution other than contacting support for that issue, if that’s the case.
If not, then you need to login to your domain registrar and point your nameservers at the ones provided to you.
Where did you get the information to set your nameservers to what they currently are for the domain in question?
Because you are managing them from the wrong account or because they don’t match the nameserver pair assigned when the domain was added to the current account.
Nothing in the account waiting on you to change your nameservers in the account you’re currently in is going to resolve until you set the nameservers to the pair associated with that account.
Whatever is appropriate for the target your root record is supposed to point to. An A record points to an IPv4 address, an AAAA record points to an IPv6 address and a CNAME points to a hostname. You should choose the one appropriate for whatever server or service is configured to listen for requests for that host name.
