Hi @Digby
Any error message or error code ?
Are you on a current Cinema offer that has more than 30 days remaining?
Is your bank card details up to date on your NOW account ?
Have you tried another internet browser when clicking on the email link ?
When you click on the link see if there is a NOW voucher code embedded on the end of the Url address bar and if there is a code, apply it directly to your NOW online account My Membership.
If nothing helps, then jump over to NOW live chat by clicking on the green chat online button from this link page below for further assistance from NOW.
https://help.nowtv.com/article/how-to-submit-a-complaint