I already registered but now want to join my chapter’s team. Can I get a refund for the difference? KB Admin, ATD Updated January 19, 2018 17:32 Follow Yes, please contact Natasha Porter at email@example.com to have the difference refunded. Related articles We had an ATD member contact us who had signed up for ATD membership and later learned about the joint membership/Power Member discount. Can they receive a refund for the difference?