This site is being deprecated.
Please see the official X‑Plane Support page for help.
Since you already own the DVD, there is no reason to purchase the digital download. Only purchasers of the digital download within these past two months so far get a free copy of X-Plane 11, not all purchasers of the digital download.
On release date, luckily, X-Plane 11 will be available on DVD.
This site is no longer being actively maintained.