Hi there and welcome
Your Yahoo Identification is the Yahoo email account you were assigned when you created the account.
Can you put this in please and tell me if you can then sign in Ron?
ok, you will have an ID, as its not possible to sign in without one.
To find it, use this link please
Click me to open
Follow the onscreen steps to recover which Yahoo ID you have been using.
I can also do these steps for you, and have made a request via Additional Services. This is optional, and if you choose to do this, I can, with your permission, remote into your computer while you watch and do all these steps (and deal with any problems that arise during them) for you. Or if you do not choose to take this service, we can continue here. This is no problem at all. Just let me know please.
Else let me know the results please.
How did you go Ron?