Welcome to the Spine forum!
Spine Essential and Spine Professional are licensed to a named person who can install Spine on up to 2 computers for their own use. Each person using Spine Essential or Spine Professional must have their own Spine license.
If you buy a new computer or otherwise install on a new (third) computer, the old installation will be automatically logged out.
Note that our system automatically may disable your license if you activate too many times in a short period of time.