An online cashback purchase can remain pending even after you have paid and everything is completed. This is because the store must first approve your order to the affiliate network. Only after the affiliate network confirms the order to Rabble can the cashback be approved. The processing time varies between stores, and in some cases it can take a very long time.
As long as the purchase is shown as pending, it means the tracking worked and that the affiliate network has received your order information. Once the store has fully approved the order through the network, the status will update automatically in the Rabble app.