When running CrowdFunding campaigns, you could potentially run into backers that want a refund.
Atlas handles transactions on the platform via Stripe, so all of the refunds will be done on the Stripe end. To process the refund, you will need to log into your Stripe account and manually do the refund there.
If you are running All or Nothing campaigns and do not reach the funding goal, this does not mean that you will need to send any refunds. When running campaigns in All or Nothing mode using post charge, the transactions are not processed unless the campaign reaches both the funding goal and the end date. You can learn more about the workflow by reading the following: https://www.thrinacia.com/blog/post/post-processing-workflow-explained