The new feature Chat and Mobile text is not apprearing on the left side of the email page .how do i enable it?

The new feature Chat and Mobile text is not apprearing on the left side of the email page .how do i enable it?
The new feature Chat and Mobile text is not apprearing on the left side of the email page .how do i enable it?
Yahoo hasn't installed it on all classic mail accounts yet. It won't be long and they will get to you. It's mandatory. We can't install it ourselves.
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