The free view of the episode is not in any folder, but it IS AVAILABLE (SD and HD) via my legacy set-top box using SEARCH and the keyword "SI". Don't know what the X1 procedure may be.
I was able to watch it Friday night & I just checked that it is still accessible. The episode is labeled as "Available Until 02/09/2020", so a time-compressed version may post (correctly?) after midnight.
Hope this solves it.
Also, under the USA folder (via By Network) there are folders (SD & HD) for "Sinner", as well as "The Sinner". The new episode is only found under the latter. (One can only hope that the staff add a sub folder "You Sinner!" or "Repent, Sinner" in due course 😜 )
Episode 1 did finally appear to be seen for free.................about 3 days after the fact. Episode 2 finally became available today. Again days after airing. If I wanted to see what happened with each episode (before I see it) that can be viewed the very next day. UGH!
So much for on-demand viewing the next day after airing. I'll just have to be patient and wait. USA network not giving it up right away.