If you don’t know what’s wrong, then how do you know it’s not a coincidence? Since all installing Twine does is put some files into a directory that has nothing to do with the operating system and add a few registry entries which, again, have nothing to do with the operating system, it’s not really possible for it to be the cause of the problems you describe. Therefore it must be a coincidence.
Also, I never once said or implied it was user error, so don’t pretend I did.
Finally, I wasn’t being insulting, but you do not appear to be able to solve this yourself, since you were reaching out here, so obviously you’ll need someone who can solve the problem. If your car broke down and you couldn’t fix it, would you be insulted if someone suggested that you see someone who was good with cars to take a look at it? You sought out people here for help, so I don’t see how it would possibly be insulting to suggest that you seek out someone who is more appropriate to solve the problem. There’s no shame in doing that.
If you still choose to see what I said as an insult, that’s on you, not me.