A bit strange
Have you had DNSSEC enabled since before?
Are you possibly using some 3rd-party service integrator?
I can see below Cloudflare nameservers correctly:
dante.ns.cloudflare.com
aryanna.ns.cloudflare.com
For www the IP address exists, however you’ve got A eventeasyapi.com and CNAMEeventeasyapi.com?
Should be either A or CNAME, if so to resolve correctly.
Were you using CNAME to some Cloudflare product such as Pages or?
If you switch to proxy , what happens?
Furthermore, since the IP address belongs to the ISP Telstra, it’s known issue that they block Cloudflare IP address space, therefrom possibly your Website doesn’t work.