Hi!
There are two dates you can show in the invoice, the order date (which is the date the order was first placed) and the invoice date (when the invoice as first created). Both could be the same as the date the order was paid, but not necessarily. If you have set the attachment of the PDF invoice to the ‘order processing’ email, then the invoice will automatically be generated when the order is set to the processing status, which in WooCommerce signifies “Payment received (paid) and stock has been reduced; order is awaiting fulfillment.” (source)
If in your shop the processing status is also used for unpaid orders, or if your workflow doesn’t involve the email attachment, then you could use our Premium Templates extension which allows you to include the “Date Paid” in the invoice, when available. You can do this with a custom block of type “Text” and content {{date_paid}}. More about custom blocks here: Using custom blocks
