The Take2 exam voucher is essentially an optional add-on product that can be purchased together with the purchase of a new exam voucher. It cannot be added on after making your initial purchase

So if you purchased your exam voucher without the Take2 option and failed the exam, you can no longer purchase Take2 at the price it was offered during the initial purchase of your certification exam voucher.

If you would still want to take advantage of the Take2 exam voucher, you would have to purchase a new certification exam voucher and make sure to include Take2 as an option before checking out.