Once Vinosmith fetches a payment from QBO and applies it, any changes to that QB Payment are not reflected in Vinosmith. The simplest solution is to delete the Vinosmith payment.
1. Go to the Orders tab and find the Invoice (or come to the invoice via the Account)
2. When viewing the Invoice details, locate the grey More Actions button dropdown and choose Payments
3. Click on the payment date to view its details and then click on the red Delete button.
That will cause the payment to be deleted and the invoice to be re-opened (if applicable).
If the QB Payment was edited and you want that new revised payment to be reflected in Vinosmith, and depending on when it was created in QB, you might need to request a covering fetch manually.