You can easily change the store currency in Wix from your Wix dashboard by going to Settings > Language & Region > Currency.
Important: Please remember to go back to your Gelato dashboard and sync the store to ensure all updates are synced and reflected on the Gelato end. Otherwise, the currency will not be updated.
Note: It may take some time after syncing before WiX updates are reflected in Gelato Dashboard.
You can change the billing currency of your Gelato account as well. Read more on how to do so in our article How can I change the currency in my Gelato account?