Ecwid has developed an integration with MultiSafepay, which redirects customers to a MultiSafepay payment page.
You will need a MultiSafepay account. See Getting started.
For more information, see Ecwid – How to set up.
For instructions on integrating your Ecwid store with Wix, see Ecwid - Adding your Ecwid store to Wix.
You can process refunds from your MultiSafepay dashboard, but refunds are not supported in Wix webshops.