Hi thank you for getting in touch with us.
As per PDF Invoice flow of WCMp admin can choose only one order status for which Pdf Invoice is sent to customers.
However if you wish to generate invoice for multiple order status, you can do custom code to enable for multiple order status.
Not asking for email, but visibility on my-account/orders page. Right now the PDF is visible in only 1 status, let’s say “Processing”. When status changes to “Completed” it disappears from my-account/orders.