I need to know how we can do this with the ONE address NEVER change policy.
Hi,
You can use your dev domain.
I agree - it's crazy that I cannot setup on a test domain even though I setup the Dev domain. I would not have bought this if I knew I could not set it up on a live Development domain.
When you purchase a product you get a license with two domains: live and dev (for testing purposes).
Also, you can add as many subdomains as you need in both domains. You can read more about this
here and
here.
Best regards,