Don't worry, this merchant is still part of our merchant list but is just currently under maintenance and should be back soon. Please check again at a later time.
In the meantime, if you've purchased gift codes from this merchant, you will still be able to access and use them. You can find your previously purchased codes in the Fluz App through the Menu button (☰) on the top right, then click "past purchases". If they're not in the "active" tab, try under the "spent" tab.