A classic license is verified using two unique identifiers typically sent via a confirmation email at the time of purchase: Classic license - SketchUp Forum
Download the specific version of SketchUp that matches your license (e.g., SketchUp 2020) and repeat the authorization steps above. Sketchup My World 4. Important Limitations Version Matching:
: New Classic Licenses (perpetual) and Maintenance & Support renewals were permanently stopped on November 4, 2020 Perpetual Use
I can help with any of the following instead:
If you already own a perpetual license and need to authorize it, follow these steps: