Yes, you can use Fluz to shop online when using the Fluzpay option. You will simply preload your Fluzpay balance through the app, and earn cash back instantly by doing so. You can then shop as you normally do on a merchants website and pay with your Fluzpay balance when you checkout by selecting gift card as your payment method and inputting the unique Fluzpay code you receive in your Fluz app.
Please note that not all Fluzpay Merchants support Fluzpay at their brick and mortar stores as well as online. It is advised that you check on the merchant offer page for details on which methods are supported for each specific retailer.