Yes, you can freely edit your pledge in crowdfunding until it's paid. As soon as your pledge changes its status to "Paid", only we can change your pledge. You can still add items to it, but you can't change the paid pledge content by yourself.
For example, if you accidentally added the wrong language option for the game and you paid for the order, you have to contact us so that we can change it for you. If you want to cancel the paid order, you also have to ask us to do it for you.
Once the order is paid, you cannot remove any items by yourself. You also have to contact us to get a refund for this specific item.