Autosuggest failure

Malcolm - Feb 5, 2022 at 06:26 AM

Until yesterday the address of my top contact was always suggested when I typed initial J. Suddenly it stopped appearing, despite attempts to re-establish it following Yahoo advice (1 Click Compose. 2 Enter the email address or contact you want to restore. 3 Click send.) which resulted in my contact receiving a blank email.
I deleted the contact, closed Mail, reopened and typed her details as a new contact. And still Mail fails to suggest her address. Can anyone offer a solution, please?

Many thanks - Malcolm