I can't change my security to 2FA
I can't change my security to 2FA on one of my yahoo accounts.
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NEIL MACALI
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Due to contractual agreements and the nature of your issue, you'll need to contact AT&T for a resolution. When contacting AT&T support, it is very important that you provide your full AT&T email address so that they are able to successfully locate your account in their system. Here's how to contact them: https://help.yahoo.com/kb/account/sln25426.html