Before you are able to complete your purchase, you need to ensure that you've linked and verified your payment methods via Bank hold verification.
If you've done so, and you are still unable to select your payment method, it may mean that the merchant you're trying to purchase from is not accepting that payment method.
For example, a certain gift card brand may only accept Bank/ACH and debit card payments and NOT credit cards, PayPal or ApplePay, while another brand may accept all payment methods. This is because Fluz aims to be radically fee-transparent. We encourage you to pay directly with your bank account or debit cards to avoid 2.5-3% processing fees for PayPal, credit cards, Apple Pay etc.