The decision
Record registrar owner, renewal contact, DNS authority and a recovery email independent from the service.
A bounded example
Point to controlled secret storage instead of writing registrar passwords into the manual.
Documentation
Use the relevant version of Ubuntu — OpenSSH before changing a live service.
Checks before change
Keep a recovery route, work on an isolated copy when data is affected, and record observations rather than assumptions. Stop if an acceptance check fails.
Limits
Hoszen does not preinstall or operate applications, hold secrets, verify backups, promise capacity or confirm a payment or VPS delivery.