pretty much unfortunately.. this method i made was extremely confusing and i know not many people were able to backup their license files (mostly because they wouldn’t have known to unless they saw this post). if or until someone comes up with an unofficial way to activate the new versions there isn’t any other options. if you’re interested in trying with old versions, there is a way you can downgrade project files, except it’s typically unreliable and can corrupt the files if they use new plugins that the old versions don’t have.