I have just purchased a subscription to Office 365 Home. It installed on my laptop without any bother but I am having trouble getting it on my WinPhone 8.1. I click the Office tile select Office 365 and setup. It then asks me for email and password which I assume is my Microsoft passport details that I signed up to Office 365 with. I enter my details and hit the sign in button and it tells me 'Something's wrong. We encountered a problem and couldn't complete this task'. What should I do?