Can’t find web to upload legally owned perpetual license for SketchUp Pro 2018 onto 2026 MacBook Air M5 - SU 2018 runs on M5 in Trial mode

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You can solve the problem of SketchUp thinks you’re not on the Internet, by reading this post I made nearly five years ago:

SketchUp (desktop version) thinks you don't have an Internet connection

Since about a month ago there has been an increase in the number of forum posts and support requests, where SketchUp is showing a message about how you need to have an Internet connection to do that feature. The features affected would include Add location, Generate Report, 3D Warehouse, and Extension Warehouse. It also would prevent you from being able to add a Classic license, or use an existing Network license. Some extensions may be affected too, if they rely on having an Internet connection…