I am having the same problem, I have a freeby today and it is "selling" like hotcakes in UK but Amazon US is not showing anything????? let me know if you resolve it with my email and I will do likewise for you
Jonathan Reid firstname.lastname@example.org
Annoying. I planned a one-free-day for today -- notified several places -- yet here it is, the day 3/4 over and it's not free. I emailed KDP 6 hrs ago. No response. My bookshelf, too, shows the promotion as "in progress."
Does no one work on Sundays??