A: Hi,

Subdomains that are considered as dev or staging:
local.*
dev.*
test.*
stage.*
staging.*
stagingN.* (SiteGround; N is an unsigned int)
*.wpengine.com (WP Engine)
dev-*.pantheonsite.io (Pantheon)
test-*.pantheonsite.io (Pantheon)
staging-*.kinsta.com (Kinsta)
staging-*.kinsta.cloud (Kinsta)
Additionally, if your domain is localhost (with any port), it will also be treated as a localhost domain.

If your customer want to utilize a license on a dev site that doesn’t fit the criteria listed above they can deactivate the license from within the Account page in their WP Admin dashboard, and then reuse the license.