Why can't I trade my character??

[amaggzze]

"You are not eligible to sell characters in the trading system." I activated my 2FA yesterday and it gave me this message when I tried to sell my warlock just now

[booleandata]

Have you ever donated? You need to be a donator to trade characters.

[Clickypen]

Heya Amaggzzee,

As Booleandata said you need to donate at least once to get "Premium Membership" to access the benefits of the trade system.
Lots of info here: Premium Membership and Donation Guide