Cashing out given points through Gift Card APIs

Hey! We're building an app in which the user will be able to complete surveys , and get rewarded with points, which he/she will later be able to cash out via Gift Cards. I was also looking at specfic Gift Card APIs such as this one: https://www.reloadly.com/products/gift-card-api

Any idea if a concept like this violates any policies?

Cashing out given points through Gift Card APIs
 
 
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