I re registered by buying boxing, basically you've got to open a new account. Why it doesnt say this I dont know. Now found out I've wasted my money because cant open box office because it says no internet connection, now they're saying update system, tried that and still nothing. Not happy at all.
Looks like NowTV have updated their service banner in the last 3 minutes saying that the white boxes doesn't support the latest Sky Sports Box Office App (how embarrassing that this wasn't picked up by NowTV before offering customers the opportunity to order and buy the fight).
Anybody effected using the white box i suggest contacting live chat for some sort of compensation.
Have you got a smartphone or tablet which i believe you can still watch the fight ?
Then tomorrow get in touch with nowtv live chat and ask for a full refund and some sort of compensation for their embarrassing mistake on their part on not advising customers that the older white nowtv boxes are not supported which wasn't mentioned in the help article above.