Just based on the wide variety of comments in that Reddit post, it sounds like there are many things that can prevent this from working. I don't know all the details of what can go wrong, but it might depend on Android version or any customizations that various manufacturers may have implemented in their Android device.
There probably isn't a single solution to getting this to work, and your problem could possibly be different than my problem.
It was just reinstated, but probably just after he posted this