There are a few ways to handle iframe related orders. We This plugin should support both variants.
- Straight forward - pretending that the iframe solution is another variant of the simplified flow without the payment methods rendering.
- Iframe messaging and order intercepting. In this flow, we will make sure that the order is created properly in WooCommerce before releasing payment handling to Resurs Bank. This means that we lock the purchase button in the iframe until WooCommerce have said ok.