Can I activate my licence key on a staging or development site?
This answer is two-fold. You do not need to activate your licence key for the plugin to function. Therefore, you may choose to not activate your licence key on your development site, and only activate it on you live site. Activating the licence key will enable automatic updates.
If the licence is activated on a site which matches the one of the following URL structures, it will be deemed as a development site and will not count against your activation limit.