You can manage donations and payments for your opportunities in two major places. The first is in each participant’s management page. The second is here on the Donations & Payment where you can manage all donations and payments from all participants and all donors. Here are a few things you can do on this page:
The “Actions” button gives you the option to resend a donation receipt to the donor, if needed.
To manage any refunds you will need to sign in through your Stripe account and manage those items through your personal Stripe account.