If you want to upload more contacts then use Import
function. It allows you to import contacts directly from outlook.com, Gmail and
through CSV file etc.
REGISTER or login:
When your mail is open, on the left side below the Yahoo, there are a bunch of icons.
The one next to the envelop is your contacts.
Missing some or all of your Yahoo Contacts? Don't worry, they may be recoverable.
Generally, you can restore contacts deleted during the past 30 days.
Let us know if this works.