This
Your tickets when you purchase them by default are loaded on the card. You will have to go to the account manager and select to transfer the tickets by email.
Also, very, very important while we're talking about it:
If you ever decide to transfer tickets to sell on stubhub, for example, you will have to "print" out the ticket which will give you a PDF, which you upload to stubhub. And if you ever decide to remove your listing and go to the game instead, you need to transfer the tickets back to the card.
If you don't, and just bring your flex card, you will be denied entry because the tickets are no longer loaded to the card and except are loaded on to the pdf.
I nearly missed a game because of this.