I'm trying to use the coupon from here : https://www.renderosity.com/may-20th---may-coupon-madness-continues--cms-21420

However it won't apply and once it stated I wasn't allowed to use it. Ichecked that all the items in my cart have the green tags so they do take coupons.

I haven't used it yet as I haven't bought anything in days.

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I do not feel obliged to believe that the same God who has endowed us with sense, reason, and intellect has intended us to forgo their use.
-Galileo