I'm having this same issue too. On Monday the watchlist was fine, yesterday it's all gone. I only checked as a friend logged on and found their list was blank and asked me if mine was OK.
I spent a while on chat to someone last night but I'm really not convinced how well they understood the issue. I only use Now TV on my PC through the website and Now Player app. So I logon to the website, choose something and then it opens the player app. The player itself has no functionality. It took me far too long to get through to the person I was talking to that I was using the website. It feels as if all their troubleshooting is based around people using the full blown apps on phones, tablets, TV sticks etc. If nothing else I think they're training and scripts need a bit of improvement.
Anyway, after fighting for a while, and only contacting them thanks to finding this thread, they had the cheek to say that they've checked and nobody else is having this issue. I then pointed them to this thread on their own community (proving they don't check this for sure) and also stating my friend was having the same issue. They have now apparently raised an issue and will get back to me within 48 hours. In the meantime I've lost my huge library of shows, and apart from a few viewed recently I don't think I'll be able to recall and add them all again (certainly not for shows they currently don't have so you can't search and find them but would reappear on your list when they start up again).
Hopefully they fix this soon or this may be a cancel position as most of the shows I got Now TV to watch have finished or been cancelled and its more a case of finding things to watch to justify paying for this for the two shows I really want. They don't care about customers anyway, only money. Hence why they added adverts into shows and then had the cheek to say pay more for no ads. This is why we have streaming services like this, to have no ads. I'm not paying them more for something that none of the other streaming services I use do!
