Hi @Anonymous User
Not familiar with the Vodafone NowTV deals to be honest.
Maybe have a read of this related help article to point you in the right direction.
https://help.nowtv.com/article/vodafone-4g-entertainment-pass-offer
If still no luck, then maybe go into the NowTV App on your devices and under My Account on the App double check under the login name it's the same account has the Vodafone one.