@Anonymous User I think there may be some added complication from Brexit. Until January 1st you could view EU Prime Video content in the UK.
Your mobile phone provider may still be listing your network connection as an EU connection and allowing you complete access to the Italian library of content.
NowTV are showing your connection as outside the EU - hence the different shows being visible.
I'm going to assume that there is content on Italian Prime Video that you want to watch but obviously when you content to the wi-fi you can't see it or have access to it? What's the name of the show?
