Bought DJI NEO Fly More Combo
Which included RCN3 Controller
Bound DJI NEO to account
Also bought DJI RC2 Controller (From DJI)
Can I now sell RCN3 Controler or is it bound to account with NEO

Hi there. Thank you for reaching out. Here's the procedure to bind and unbind the controller on your DJI Fly app. Please follow the instructions below.

To unbind the remote controller, the network needs to be connected, and the remote controller and aircraft need to be connected. Then please refer to the below path to unbind the remote controller. The path is:
Profile>Device Management>Value-added service>Unbind RC

Hope this helps. Please don't hesitate to reach us if you have other inquiries. Thank you for your valued support.