Inferred limitations to your freehold licence to Version 2021!

[bmike]

As explained up thread you can use a plugin:

Eneroth Open Newer Version

My 63rd extension is a small utility that let’s you do the seemingly impossible - open a model made in an more recent SketchUp version. Hopefully this will be especially useful for the hobby community which uses the 2018 format in the web version but is limited to Make 2017 as desktop version. [Eneroth Open Newer Version for SketchUp] Usage: Go to File > Open Newer Version, select a file to open, and then select a file location for the converted, compatible model. https://extensio…

Please read, people are trying to help you.