What are the chances of getting banned for requesting more than one giftcard within a day?

I'm currently doing offers on "mode earn app" also known as "current rewards". The max amount you can spend on a gift card is $20 except for one prepaid Mastercard for $50. I have enough points to request multiple giftcards but I'm hesitant to do so since I don't want to get possibly banned. Has anyone tried it before and what was the outcome?