I did not choose the new Yahoo email, I preferred the Yahoo Classic. Evidently it was changed without my knowing it. I can no longer receive my emails on my cell phone as before, and I am wondering why. Since I did not choose the new email, will you please change it back to the Classic? Thank you.
Try downloading the Yahoo Mail App for your phone.
If you prefer to use the default mail app, don't use the built in Yahoo Mail configuration, select "other" and use these settings when configuring your connection to Yahoo Mail: