The red flag on the "Manage My Services" button serves to alert you that your account is past due.

Figure 1: "Manage My Services" button with red flag
Clicking the "Manage My Services" button will open a menu with an account status message and links to updating your billing information. Learn more about the online alerts.
Along with the emails sent to your primary Yahoo! email address, the online alerts notify you of the past-due status of your account, including the impending suspension or closure of your account, depending on how long your account has been past due.
To update your payment information:
a) To edit the card you are currently using to pay for your service, click the "Edit" button, edit the card, and click "Continue."
b) To switch to a different card, click the "Add a new payment method" link in the upper-right corner, select or add a different card, and click "Continue."
Yahoo! will attempt to authorize your credit card for the full amount of the past-due invoice. If your card is authorized, your account will become active within one hour. You should no longer see the online alerts in your account.
If you continue to see alerts after updating your billing information, please contact customer care.
Note: If your account was suspended, it can take up to 24 hours for your DNS (domain name server) information to be updated and propagated across the Internet, during which time your domain will not be available and you will not be able to receive email. Learn more.
Yahoo! Store owners (not Merchant Solutions)—view instructions for updating your billing information.