Hi Tyler,
Your account has lost 20%, or 40,000 EUR, of its equity and is now at the same dollar level as the Minimum Equity in the EA Properties dialog box. So to protect your account from further loss the EA is removed from the chart so it can no longer place losing trades. To allow your account to start placing trades again you will need to change the Minimum Equity from 160000 to a smaller amount.
Alan,