Hey there, @Anvanda
Bo here from Shopify Support!
That is a really great question - iDEAL Payments are actually available to merchants in the Netherlands who use Shopify Payments, iDEAL have not built a standalone integration with Shopify just yet. To enable iDEAL for your online store, you need to use Shopify Payments. iDEAL works only when Shopify Payments is active. It doesn't work when Shopify Payments is in test mode. You must use a business bank account in Europe to offer iDEAL payments on your online store. Transactions using iDEAL can be made in Euros only, so you should configure EUR as your trading currency on your General settings page.
Before iDEAL can be activated, you need to set up Shopify Payments. After you activate Shopify Payments, iDeal is automatically connected to your store and available to your customers.
When a customer places an order and uses iDEAL to pay, the funds are paid to you on your next payout. To learn more about getting paid with Shopify Payments, see Shopify Payments pay periods.
If you refund a transaction processed by iDEAL, then you are not refunded the processing fee charged to you by Shopify Payments. Payments made with iDEAL can be refunded within 180 days of the original charge.
When a customer pays for an order using iDEAL, a chargeback can't be filed for the order.
All the Best,