And see, my argument is, just a few days ago the same audio engine (same version and build number) was able to load the FlexASIO driver on your computer and now suddenly not anymore. So then something outside of the audio engine must have changed and that is most likely those settings on Windows side (also mentioned in this thread in which you also participated).
And here are people that want to help you and you only come up with it does not work.
Again, I am willing to do a remote session with you. I dont know otherwise how to help you any more.