This version used a perpetual license (also known as a Classic License). Once purchased, you owned that specific version forever. It required a Serial Number and an Authorization Code to activate.
SketchUp Help states they no longer officially offer SketchUp Make 2017 for download due to security vulnerabilities from outdated open-source libraries. license sketchup 2017
Trimble no longer sells new licenses for SketchUp 2017. The official activation servers for the 2017 version have been . This means: This version used a perpetual license (also known
This often happens to Classic License holders. license sketchup 2017