Suddenly stopped working – Yahoo Mail - Organized Email Review

I used the app for several months. Suddenly it stopped working on my iPhone 8. When I tapped on the app it would come up, but then just disappear. I contacted US cellular. They said to contact Apple. I contacted Apple, they said it was the app itself. They told me how to contact the developer. But when I go to app support, nothing happens. The support will not open. So basically I have this Yahoo! Mail app on my phone and it just won’t work.
Review by Anthony Blades on Yahoo Mail - Organized Email.