I submitted my state return (Colorado) on 1/27, and the status has been pending for 4 days since then. CO website shows 'return not received'. What do I do?

The federal return was accepted and approved within a day. The CO still shows as pending with TurboTax and my state says they haven't received it. How do I resubmit it or get TurboTax to let me resubmit?