It’s a button, located in the top-right corner of the browser. Redeem your promo code. In the black text box under ‘Redeem Roblox Codes’, type in the code and select the Redeem button below.

Unfortunately, the most likely scenario is that the Button Simulator Maniafreebie you’re trying to redeem has expired. This can happen without warning, because Roblox games tend to remove codes ...