i have ms office product key. its working perfectly. i would like to purchase office 365, however i cannot. it keeps asking for the email address linked to this product key. i don't know the email address linked to ms office product key. i have a macbook
pro. the apple store is unable to assist me. i would like to use 365 on my iPad, an use skydive, does this mean i need one email address so that i can sync my documents?
please help