Rebuild DNS

I need help with DNS for my domain: unitedweldfab.gt.tc

In my control panel DNS records, I have one IP:

However, authoritative DNS and public resolvers are returning another

Verification commands and results:

1. Authoritative server checks: nslookup unitedweldfab.gt.tc ns2.gt.tc Result: not the on on the account

nslookup www.unitedweldfab.gt.tc ns2.gt.tc Result: not the on on the account

1. Public resolver checks: nslookup unitedweldfab.gt.tc 8.8.8.8 Result: not the on on the account

nslookup www.unitedweldfab.gt.tc 1.1.1.1 Result: not the on on the account

Because of this, my domain is serving content from an old host/path and not the files in my current account document root.

Please let me know how I can:

1. Confirm which DNS zone is authoritative for unitedweldfab.gt.tc
2. Publish/sync the A records so both apex and www point to the correct IP
3. Confirm whether there is any hidden/overriding record or account-level mapping forcing the other IP

Thank you.