@Anonymous User @Oriax
It seems to be an issue at the back-end as it is affecting multiple devices as well as the website itself, as the issue is at NOW TV's end there's not much we can do to fix it other that wait for NOW TV to comment. You could try checking your continue watching on other devices to see if any yield different results. Watching content by selecting it manually does seem to make it stick in continue watching again so if you can remember which programmes you are currently watching you can find them manually to start watching and hopefully they will then stay in Continue Watching.
Like everyone else, my "My TV >>> Continue Watching" area got cleaned out/deleted yesterday, I can only presume that Now TV's techies released a software update that was not tested, or properly tested, before it was uploaded to the live system.
Now if I was a cynical man I would say that someone was doing this deliberately to create continual work for themselves but software applications being what they are need constant maintenance and updating so there would be no need for such shenanigans.
Regardless of all that, it is understandable that some undetectable bugs will creep into any system but this current one, i.e. deletion of Continue Watching, is obvious and should have been spotted beforehand.
Therefore, it is unforgivable that this improperly tested update was released onto the live system with it's immediate and negative affect on so many Now TV users.