试过但是都不能用,好像跟GNC金卡的offer不能combined,说我已经有special offer了所以还是金卡的20%更划算,不管怎样,谢谢mm。
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直接点这个coupon进去也不行,不能用,msg是这样的
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Thanks for your interest in this special offer.
You currently have a special offer in your shopping bag that cannot be mixed with this particular special offer. Many of our promotional offers cannot be combined.
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