Yes. You are able to use your FluzPay balance to purchase more gift cards in the app.
UPDATE: As of Sept. 23, 2020, we recently updated the $26 lifetime cashback requirement to include Fluz balance payments. You must hit the minimum requirement of lifetime earn of $26 first before you can withdraw it or use it to buy more gift cards. This is a one time requirement only. After you've hit $26 in earnings, you may withdraw anytime even if it's just $1.
This helps Fluz maintain a sustainable business and provide competitive cashback to our users.
Before each purchase, you can click "Learn More" under "Pay with Fluz Balance".