Not Getting KPIs from Looker Studio + Mailchimp Connector(Data Hub)

Hi,

We are using Data hub as an connector in looker studio which is a free connector, but somehow we are not able to get all the kpi’s or metrics fields from mailchimp with this link bounce rate, Abuse Rate etc.

Is it a limitation or is their any alternative so that we can get all the metrics involving A/B test campaign audience list with name and email detials etc.

Thanks