It looks like the "free" method is working. To be clear, you have to consider that I only see the free method on Instant Wins...not Sweepstakes. The two are easy to mistake for one another, sometimes.
I have not noticed that I could enter an Instant Win twice in one day, by points, and then again by the official rules route.
I entered 4 free instant wins today without a problem. The link in the official rules took me to the same couple of pages and I entered for a chance to win today. Also, the Instant Wins now show that I have entered the individual contests after I open a tile again to check.
And, I am not happy with the Instant Win games that last a week with the same number of wins (100) that we previously could win in one day.
Thanks for everybody's input.
AndrewToo