Thank you for bringing this topic up. Feedback is always appreciated. We have clarified this matter in the Store descriptions on the Open-E website and you can check it out here.
If you purchase the Feature Pack - Automatic Active-Active Failover for iSCSI Volumes - you will receive 2 License Keys. The Feature Pack is for a pair of nodes and enables 2 licensed Open-E DSS V7 Servers to operate using the Automatic Active-Active Failover for iSCSI Volumes.