Hello .
I do apologize for the email issue you are experiencing. When you have a moment, I have provided a link with steps to assist with setting up the third-party email clients from Yahoo.
Please let us know if this helps.
I ended up getting Yahoo support because I misinterputed the need for the a one time pass code to set it up in OutLook too.
That should be highlighted or emphasised more. Essentially I thought just moving to Yahoo on the online browser was the only time that was needed and not for OUTLOOK also
