get basic mail?

Answer 1

The Sharon Bot is a liar and should be banned. Switching to classic is as easy as clicking a link (url commented)

Answer 2

Starting January 31st, 2019, the classic version of Yahoo Mail that you’re using on your computer will no longer be available. To ensure continued access to your Yahoo Mail account, you will be automatically upgraded to the latest version of Yahoo Mail or Basic Mail, depending on the compatibility of your computer’s web browser.