It's not you that's incompetent...
" screen of 10.1-plus inches."
That's 7 and larger... it's installed on my Nexus 7
And it needs KitKat 4.4 not Lollipop.
You need an Office 365 account for screens bigger then 10.1. Only need a microsoft account for small screens.
Silly Apple fanboy might want to read the description in the android store before spouting crap.