In the coming month or two, we will be updating all of our apps on the store with a new licensing module, as well as additional app updates. By default when purchasing an app from the store, you will receive one license for the app. To purchase additional licenses for the same app under the same purchased email address, you will need to contact us. Upon purchasing, an email link to your license activation will be sent to the purchaser's email address. This link is a unique link to your license(s) of that individual app and should not be shared with anyone as your licenses can be activated from it.
We know this new feature will effect our existing customers who have installed apps multiple times for one price, however, this is something we must do to continue offering apps at a cheaper price. Apps currently installed will not be effected, but as soon as they are upgraded, they will require additional license purchases.
Please do not hesitate to contact us should you have any issues in upgrading. Thanks!
via Blog http://www.redtransitconsultants.com/blog/new-licensing-feature
