UPDATE: 10/02/2018
I finally got around to doing uploading this on my old computer, and seems to be working.
The FAQ section of the website is pretty good.
I wanted a dim screen before 6:00 PM, so I told it I was getting up 3:15 AM in the morning or something like that.
The Melatonin I was taking to get to sleep wasn't working so well as I've been doing some evening AutoCad lately.
I hope this cures my ills.
My newer computer has an evening dimming feature to filter out blue light built-in. I probably will not load the program on that computer.
https://justgetflux.com/