Issue viewing emails on my Outlook through Android's stock email app

So I have my work Outlook email synced up to the stock email app for Android.

All of a sudden a couple of days ago, it'll only show me today and yesterday's emails. Then the next day, it'll still only show that day and the previous day, so the "older" emails just keep going away for some reason.

This goes for the inbox and all folders as well. I'm not sure what happened, as I don't recall messing with any settings from the last time it worked to the next time I fired it up and all my emails were not showing. Plus there aren't a whole lot of settings anyway so I have no clue what I did or how to fix it(other than trying to remove the account and activate it again, but I'm trying to see if I can resolve it first)

Anyone ever see or hear of this or something similar?

Thanks