How to allow free gift with other coupons

Hey team

I’m giving away a free gift with the use of a coupon on orders over ￡30

however if a discount coupon is used, e.g. 10% off with a code, the free gift isn’t applied despite the order being over ￡30

I don’t want to allow the % discount coupons to be used with other coupons as I don’t want customers to stack discounts e.g. use two different 10% off coupons

Is there a way around this without having to allow all coupons to be used in conjunction with others?

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