Using a third party application to access my Yahoo mail is insane. Many have identified numerous problems and take-aways provided by the new and virtually useless Yahoo mail. If your intent is to drive decades long supporters of Yahoo to other solutions, you are succeeding. Many messages are completely unreadable and must be sent to other mail providers to decipher the note.
Making a mistake is inevitable but to ignore the pleas to restore sanity or to fix the innumerable blunders is simply insane. It takes courage to step up and remedy a mistake instead of doubling down on chaos.