Problem statement
The tenant domain needs to be changed from https://name1.us.auth0.com/ to https://name2.us.auth0.com/. How can a tenant domain name be changed?
Solution
As the documentation Create Tenants explains, there is no way to change the tenant name after its creation.
Even though it is not possible to change the tenant’s canonical domain, users can set up a Custom Domain, which will be presented to the end user.
Related References