MS Outlook will not sync with new Yahoo email - PLEASE switch me back

I am attempting to update outlook on my desktop with the new settings for yahoo, and everything I have tried fails with the same results. I have tried with creating the 3rd party password as is mentioned in one of the help pages, I have tried with the password i had to create for Yahoo, and I have tried with the password for xfinity. None of these will connect with outlook, and I now no longer have access to email. 

The yahoo app I installed on my phone initially seemed as if it would work, but now, it keeps saying my phone is offline, when clearly it is not. 

This switch to Yahoo is terrible, I need this switched back to xfinity, at least that was working with outlook on my dektop