No problem, I'm glad to try to help.
The only other thing I can think of is that the wrong password might have been saved in your Mac's Keychain, and this incorrect password is what is tried when attempting to access your AOL email account.
You can review what passwords are stored in the Keychain, by using the Keychain Access app, located in the /Applications/Utilities folder on your Mac.
I suggest giving it a try. Run the app. Then select the "login" keychain under "Default Keychains" in the left-most window. Then try entering something like AOL in the Search window. Any keychain entry that has "AOL" in it should appear in the list. Most likely, the AOL password will be of Kind: application password.
For example, for my Hotmail account, it shows up as: <my Hotmail account name>@hotmail.com. If I double-click on this entry, a new pop-up window will appear offering my an opportunity to "Show password." If I select that, I just need to enter my Mac's user account password to see what is there.
If this works for you, you should see what the Keychain thinks your AOL password is. If so, double-check it to see if it is correct, If it is not, just delete this particular keychain entry. Then try logging into your AOL account again.