Has anyone found their contacts do not autofill in Yahoo mail since the Safari update?

I have same problem on my PC and laptop with Yahoo Mail. In addition to autofil not working, my contact list for a developed List (for a journal I write) has been eliminated. I have Yahoo + and and called Yahoo customer support and was told they could not find my List I'd developed of email addresses, and that I'd have to develop that List of email addresses again. Regarding autofil, they had me try all different things and nothing worked and they said they had put in a ticket to tech support and to try composing an email again in 24 hrs to see if autofil worked. For the record, I am using Google Chrome for Browser but tried Yahoo mail also on Microsoft Edge and it didn't work there either.

This has been a problem with Yahoo mail on/off many times.