The plugin uses 5 primary invoice statuses to track the complete invoice lifecycle: Status Description Customer Visibility Payment Available DRAFT Invoice is being created and not yet ready to send. Users can fully edit draft invoices. Not visible to customers No PRO-FORMA A preliminary or quotation invoice sent for review before creating the official invoice. Not visible to customers No UNPAID Issued invoice awaiting full customer payment. Payment Now button is prominently displayed. Yes (with Pay Now button) Yes PARTIAL Issued invoice with partial payment received. Balance owed is displayed. Pay Now button available. Yes (with Pay Now button) Yes PAID Invoice has been fully paid. Displayed as receipt. No payment button available. Yes (as receipt) No