@moo
Assuming you have cleared the browser cookies and data, as well as trying a new browser and rebooting your router.
Speak with staff via live chat and report the issue. Make sure to be signed in and use the 'How to get in touch' drop down.
https://help.nowtv.com/get-in-touch/tv/problems-watching-now
FYI that I do not work for NOW, just a NOW customer trying to help
