When you receive a payment for an invoice outside of Stripe and Big Dash you can mark the invoice as paid in the Big Dash admin.
Navigate to Invoices for a list of all Invoices.
Enter the invoice number and press enter or find the invoice in the list
Click on the invoice status 'Open'. A dialog will open to confirm you will mark the invoice as paid.
This action can't be undone. Only mark an invoice as paid if it's paid. Don't use it to void the invoice when you accidentally finalized the invoice or made a mistake. Voiding an invoice is currently only possible in the Stripe dashboard.