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BILLING6 min readUpdated 17 Aug 2026

Pay an unpaid invoice

Pay securely in Knox using an available payment method or a saved card.

OXWritten by oXnames SupportChecked against the current Knox workflow
WHERE TO GO IN YOUR ACCOUNTKnox > Billing & invoices > Unpaid > Open invoice
BEFORE YOU START

Get the right details ready

Sign in to Knox using the account that owns the invoice or service. Have the invoice number available if you need to contact support.

Security first. Never include account passwords, card details or authentication codes in a support ticket.

FOLLOW THESE STEPS

Make the change in Knox

Work through each step in order. Keep this guide open in another tab if that is easier.

  1. 1

    Open Billing & invoices from the Knox sidebar and select the unpaid invoice.

  2. 2

    Review the invoice lines, total and due date before choosing Pay invoice.

  3. 3

    Select an available payment method. If an eligible saved card exists, Knox will offer it securely.

  4. 4

    Wait for the payment confirmation page. The invoice status will update automatically when payment succeeds.

WHAT HAPPENS NEXT

Check that it worked

A successful payment displays a receipt screen and changes the invoice from Unpaid to Paid.

IF IT DOES NOT LOOK RIGHT

Try this before contacting support

If you leave the payment provider before returning to Knox, reopen the invoice and check its status before trying again.

Open a support ticket →