How to find out how many customers ordered twice (or more) for the given period of time

You must be logged in as a Reports & Analytics Dashboard user to view the customer retention data.

Scroll down to the Customer Retention circular diagram and select the desired date range. Wait a second for the data to calculate and review the Customer Retention diagram. You can click on the various segments to see the percentages of the customers who twice, three times, 

and four times and more.

You can hover your mouse cursor inside the circular diagram to find out the actual number of orders for each segment. 

Also, if you have multiple brands/domains, you can click the appropriate segment on the Brand Share circular diagram to find out the Customer Retention data for that particular brand.