1. For ST CLUB MEMBERSHIP: The number of domains you can use depends on the Membership Plan you purchased (you can see it here). You can change to any theme released during your membership period on the licensed domain. Sub domain (subdomain.example.com) and the main domain (example.com) will be considered as 1 domain.
  2. For ST DEVELOPER MEMBERSHIP: "ST Developer Membership" owners are given the right to run unlimited instances of any theme or any other products on any domain.
    Licensed domains are unlimited! This is particularly fit to full time individual web design developers/companies.