Customers pay Ordentic. When that payment succeeds, Ordentic transfers your share to your connected payout account and deducts commission automatically.
In practice there is one transfer per supplier order, in euros. The transfer amount is the order total including VAT, minus commission and any VAT on commission. The transfer is created when the customer payment succeeds. It does not wait for you to ship, and uploading the customer invoice does not start or change the payout. If a cart has several suppliers, the customer still pays once, and each supplier gets their own transfer.
On the order page, the timeline can show that an amount was transferred to your account. To manage your payout balance and bank details, open manage payments from the supplier home. That opens your Stripe Express account.
The commission rate is under preferences, then commission & legal:
If a customer is refunded, commission is returned in proportion as part of the payout reversal.