Thanks for the freeLOT.

I had to "ADD TOKEN" using the FreeLOT contract address 0xc39f7bb97b31102c923daf02ba3d1bd16424f4bb to receive it.

Then I had 1 FreeLOT showing up on Metamask.

My steps are captured and shown here https://imgur.com/a/4T1QFFF

Until I chose the numbers and clicked "BUY TICKET!" there was no difference from the normal process.

After clicking "BUY TICKET!" a dialog popped up asking if I want to use the FreeLOT coupon. 
NOTE: the dialog box should be slightly bigger to include all of "YES" "NO" selections.

The FreeLOT does not get reduced immediately after the purchase, but it gets reduced after a short while.

Now, let's see if this is my lucky ticket....