I don't know if this will help anyone, but here's what I did to solve my Office problem. First I signed into my Microsoft account and had a verify code sent to my email- opening my email in a new page, I got the code, went back and put it in on the account
page. Next is where it gets fuzzy as I could not find my way back to write the steps down for you, but I believe I went to My Products (I think this is where there was something about devices). I think I clicked on something referring to Office and how Microsoft
could activate it for me. I clicked activate and a few seconds later a screen popped up asking to shut down current programs and to restart the computer. I closes my internet browser, restarted the computer, when it was back up I clicked on Word, signed in
and it was ready to go. I don't know if it was just a fluke and my instructions are vague to the extreme, but it's been working like a charm since. Maybe my ramblings will help you too.