Scrolled through some papers online and found the way to fix it. It worked for me, but you have to have your credentials ready to sign in again into the yahoo account. They advised Android users: ‘For Android Devices: 1) Long press the app icon. 2) Click the info icon on the top right corner to open the app settings. 3) Scroll down to the usage section and storage row, and open it. 4) Clear cache and clear data. 5) Reopen the app and it should work as usual’.
