You can get the rewards for your account for pre-ordering/backing the game from the NPC in Highsteppe. They are straight ahead after you exit your Player House. They have a dialogue bubble above their head. Just speak with them and they will give your rewards.
For clarification, here’s what you should get:
Backer (and above):
Confetti Gun
Backer Cape
Founder (and above)
Founder Cape
House Deed
Epic Founder (and above)
Epic Founder Cape
Fellowship Certificate
If you backed the game during the Kickstarter campaign when it was active, you will also receive a Dragon pet.
If you think you did not get a reward that you should have, please respond to this thread and let us know the name of your character and what reward you didn’t receive and I will investigate further.
Thanks!