Changes since SOA version
IXFR is a zone transfer request that returns changes since a specific SOA version. Enter the SOA version to request changes since then.
Not an apex domain
The domain ed4016c4-57e1-4c99-b357-66060731845a.auth.acme-dns.io is not the root of its zone.
Instead, try zone transfer on auth.acme-dns.io .
Instead, try zone transfer on auth.acme-dns.io .