You can acquire the Pro or Premium edition by visiting the official Glorylogic ISO Workshop page.
Since ISO Workshop is available as freeware, you can download and use it immediately without any license key. To do so safely: iso workshop license key
The best way to use ISO Workshop without restrictions is to support the developers by purchasing a legitimate license. Steps to Acquire a Legal Key Visit the official ISO Workshop website. Navigate to the or Purchase page. You can acquire the Pro or Premium edition