Opened a ticket a few days ago, haven't heard anything yet.
Issue: In settings, I can login to and see AMC locked videos and I see my cable account provider listed in the top right corner of the AMC screen, no issues. Problem is that Playon can not see anything / contents / shows / anything when I select the channel to browse for a show. Also, my subscriptions for AMC, which worked a couple of weeks ago, now also fail.
I'm running the latest version of Playon and I've visited the AMC site in both Chrome and IE, logged in with cable account and can watch locked shows.
Hope to hear something soon.