You have been using AOL for over 20 years and have had the same email address. You have others, but this is my main email, so changing it as my main email would be cumbersome. Anyway, a few days ago, my iPhone stopped updating with aol email login messages. You could access messages that were on my phone from that point and before, but nothing current, as in the past few days. So You went through Apple's troubleshooting steps of deleting the AOL account from the Settings on my iPhone, reinstalled it, and lo and behold, my phone's settings keeps telling me You have either the wrong password or the wrong email address/Name.
You went onto my browser to make sure I had all my details correct (name, email address, password) and verified you did. So now, scratching my head, You used Safari to access AOL's site directly through the browser on phone. It asked me for my email address and password, and it works fine! Okay, so then You downloaded the aol login App, went through basic setup, same email, same password, and it also works fine! Just call 1-800-544-8083 toll free.