This is for HTML5 stores only, as the checkout process in the Infinity Store takes place within that store.
You cannot redirect your customers back to your own website after your customers make a purchase - this is because PayPal require you to provide a confirmation screen after payment has been made. To display a confirmation page, our systems must communicate with PayPal to check if the order was successful or not.
As the order is placed using our system, only our system can then communicate with PayPal regarding the order.
Please note that your customers will redirect back to an order confirmation page with a link to your Airbit profile so they won't be confused about where they've landed.
Alternatively, you can provide a website return URL in Dashboard > Selling Tools > Seller Preferences which will be displayed on the order confirmation page, so customers can click back to your website.