If you have invoices in your Ontraport account that won't populate in your ClickFunnel Product Settings drop down menu, you will need to make sure the Ontraport invoices are HTML invoices created in the HTML editor.
Login to your Ontraport account, click your Profile and select Administration in the drop down menu.
Select Email on the left navigation menu and then Double Opt-In/Invoice Manager.
Next, click the New Message Template button to create a new "Invoice".
On the Template dashboard, select Invoice: HTML Editor.
Complete the creation of your invoice on the Ontraport platform and then submit the invoice for review.
Once the invoice is Approved, you can login to your ClickFunnels account and select the invoice from the drop down menu in your Product Settings.
If you have any questions or concerns, please contact our support team by emailing firstname.lastname@example.org or by clicking the support icon in the bottom right-hand corner of this page.