Square Enix has stopped digital orders for Final Fantasy XIV: A Realm Reborn. Apparently, there are too many people playing the game, which results in downtime. A server expansion is, however, planned for the future.
The company's statement on the matter says that "Due to the overwhelmingly positive response to Final Fantasy XIV: A Realm Reborn, we are currently experiencing extremely long wait times for users to be able to log in and play." And continues, "As a temporary measure, we will halt sales of Final Fantasy XIV: A Realm Reborn’s digital download products so we can accommodate all of those wishing to play. We are working to expand our server capacity in the coming days. We sincerely apologise for the inconvenience this causes."