Why did my card issuer decline my request to link my card to the Fluz app? It’s possible you accidentally mistyped some of your card information. Please try and add your card again, and double check that you typed your card number, CCV code, and billing zip code correctly. Related articles Help: I have an unauthorized charge on my debit or credit card from Fluz How do I add my bank card to the Fluz App? What are Cashback Vouchers? How do they work? Are there any usage restrictions with Vouchers? How do I process a Fluzpay transaction inside a store?