Two main reasons.
In order to provide the most inclusive level of tracking on Google Search Console, we need domain level access to your site.
Whether someone goes to
- https://onefirefly.com or
It will be tracked in Search Console.
If we don't have that level of access, we can only track the exact URL.
If you're purchasing a website with us, domain registrar access is needed if you'd like us to update your A record (taking the website live).