To give a refund, you add a credit invoice to the order in Lightspeed eCom and mark it as Not paid. The credit invoice triggers a refund in Mollie wgen it is created. To add a credit invoice, follow the instructions in Refunding orders.
Important
If you're switching to Mollie for Lightspeed eCom from Lightspeed Payments by Mollie, keep in mind that you need to be able to process refunds on previous orders.
To ensure that previous orders are accessible, turn off all payment methods in Lightspeed Payments by Mollie, but keep the app itself enabled.