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 u86jc9sk8n5607l7d7eqiatejn8sasjq.shopfactory.io is not the root of its zone.
Instead, try zone transfer on shopfactory.io .
Instead, try zone transfer on shopfactory.io .