By definition, you cannot purchase the NFR version. I'm not sure how you were able to do this. The NFR license should only be used internally for SEs to provide customer demos. The resale versions come in 100, 300, 1500, 5000, and 10000 licenses. If you have purchased a 300 device license for LMS 3.0, that can be used with LMS 3.0 and 3.1.