Why won't my iPhone read my word documents?

It used to before one of the updates,
I could just do the two finger swipe down from top thing and it would read my Microsoft word documents,

Now all it says when I do this is "page one of two track change is off"

So I guess I have two questions?
*how can I make My phone read it to me again
*what the heck does "track change is off" mean

Thank you.

Added (1). @minjun, I tried doing those things,
I closed all other apps, tried, nothing,
I signed out and back into word, nothing,

It's not imperative my phone read to me, I can read,
I'm just lazy…

Happens to me sometimes. Try to double click the home button and delete anything. Or you could try to re start your phone. I like to do all these and log out and log back in.