ios 9.2.1 wont receive yahoo email
Shortly after installing ios 9.2.1, my iPhone 6 plus cannot receive any yahoo emails. (Prior to this it was working fine for over a year.) My gmail works fine. I called Apple and they don't have a clue. They told me to backup my phone and restore it and that had no effect. I did it three times and lost half of my apps when it restored and still my yahoo is not working from the phone app.
I had to download the YAHOO APP in order for it to receive emails in the yahoo app only. Please help I've been working on this for 3 days while I'm snowed in by BLIZZARD JONAS in NJ. Thank you.