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BILLING6 min readUpdated 17 Aug 2026

How automatic recurring payments work

Learn when Knox attempts recurring charges and how invoices are updated.

OXWritten by oXnames SupportChecked against the current Knox workflow
WHERE TO GO IN YOUR ACCOUNTKnox > Billing & invoices
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

    An invoice is generated before the service due date according to its billing cycle.

  2. 2

    If an eligible recurring mandate is stored, the payment gateway can attempt the charge.

  3. 3

    Successful payments mark the WHMCS invoice paid and Knox reflects the new status.

  4. 4

    A failed attempt leaves the invoice unpaid and sends the relevant payment notice.

WHAT HAPPENS NEXT

Check that it worked

The billing page should show the updated status immediately after Knox receives confirmation.

IF IT DOES NOT LOOK RIGHT

Try this before contacting support

Refresh the invoice once. If the status still looks wrong, do not submit the same payment repeatedly; open a support ticket and include the invoice number.

Open a support ticket →