Continuing the discussion from Paid extension says unlicensed when used:
@colin - I’ve had an email response from Dave Penney re some plugins that I’ve purchased from him and now show as ‘unlicensed’ when I try to install into the latest version of SketchUp. The plugin is ‘Scribbler’ and I currently have it installed in on other version of SketchUp only on my PC (2021 Pro). The developer said I should contact the forum for plugins hosted and licensed via the Extension warehouse. I can see it shows 3/3 activations however 2 of those where on work computers where I teach with now uninstalled/versions of the software. Any help appreciated.