Multiple customised products in cart

We have some alternative gifts in our shop. Each one has a customisation question. However, when you try to add both alternative gifts into the cart, it won’t let you – it removes the first one you added. Obviously, we want donors to be able to buy both alternative gifts in one basket, rather than checking out twice!

Am I missing something here? Is this a problem with the customisation question, or is there a tick box in the settings I’m missing?

Thanks,
Gemma

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