Isadora 4 Buy-to-Own Licenses, (Isadora 4 Perpetual and Isadora 4 USB Key Licenses), behave differently than their earlier counterparts. Isadora 4 Buy-to-O...

Before upgrading, you may want to read this article on how Isadora 4 Perpetual and USB Key Licenses work. Isadora 3 Perpetual Licenses How do I upgrade my...