Still cannot launch it under Windows 7, unfortunately.
But hey, a manual! Now that's what I call a proper retro-package. Cheers.
There's a Win7 version of EdgeWebView2, but it doesn't help. Too old, perhaps. I also tried to throw VxKex at it, as sometimes it does help, but no dice this time. Maybe I'll think of something else, but not sure as of now.
At least I can think of, like, right now, is that Construct also has an option to export as Node.js version or something... but it's really up to you. I have Win10, if anything, and though I do not use it often, it's an option.