Please note, that your orders and customers are not part of the default settings. If you miss those there is no other way to import previous order data so you have to start all over again by creating a second shop.
I have a "baby" store. Less than 200 orders. It took several hours to copy and the "Lifetime Spent" and "Average Order" for the Customers isn't copied over so therefore it's pretty much useless to me.
They also nag you consistently to change your review. You gain a second star guys because they acutally answer their email.
If you just want the copy over products, theme, collections over to a different shop, this is your app. If you want to acutal have useable duplicated order data well - better luck trying a paid app which is my next stop.
All I wanted was to change the login myshopify.com domain for my shop and have EVERYTHING else stay the same. Shopify won't let you change it so I wasted hours of my life waiting for this.
Since this review we have improved on how customers and orders information is transferred. It's now faster and you can do it in a second step, so no need to do it at the same time you are exporting your products. You can export your products, and once it's completed you can export your customers and orders.