To enable/disable the 'Cookie Consent', from the store dashboard go to:
> Store Settings > Cookies & Scripts > Setup

From within this page, the top tick-box will either enable or disable the feature. If using the 'WP Super Cache Plugin', make sure that the tick box directly underneath is also checked while also enabling 'Dynamic Caching' and 'Late Init' in the 'WPSC advanced settings'.
(*Don't forget to click 'Save Changes' after making alterations*)