Sorry to dig this thread up again after a month, but yesterday's Keep livestream mentioned that the issue with DAO profiles not showing up if you played DA2 first has been fixed.
I can confirm that it is indeed working for me.
You need to do the following:
1) Start DAO and ensure that you are signed into the servers using the same user profile as you are using for this site.
2) Load the savegame for the character/s you want to upload.
3) Change your character's armour, weapons, acessories, etc. You can change them back again, if you wish.
4) Save the game and exit.
5) Go to your DAO profile webpage. Chances are, there is still no data.
6) Wait a few minutes to an hour and reload. Your characters should now be displaying correctly.