In my yahoo fantasy sports app, all of a sudden today it stopped working, keeps saying user not authorized but I am still signed in.

Hello Veegauze,

Thank you for reaching out in Apple Support Communities. We understand the Yahoo Fantasy & Daily Sports app is prompting an error message, that you're not authorized. We'll be happy to help.

To help troubleshoot this behavior, we recommend to follow the steps outlined in this helpful article: If an app unexpectedly quits, stops responding, or won’t open

Following these steps may help.

Kind regards.