Back in 2016, SketchUp Pro used a two-part credential system to activate the software:
Are you trying to recover a lost license for a specific project, or sketchup 2016 license key and authorization code
SketchUp 2016 License Key and Authorization Code: A Complete Guide Back in 2016, SketchUp Pro used a two-part
The current standard, which includes the desktop application, LayOut, and full 3D Warehouse access. Back in 2016
If you still have SketchUp 2016 installed on an old computer, go to Help > License > License Info to view your serial number.