WotLK Unable to trade characters through trading system

[HighCoeff47]

Hello peeps,

Firstly, I have been trying to contact GMs, Community Managers and the support team, but it seems that this is impossible to achieve without posting.

To cut it short:
I cannot list any of my characters through the trading system. Says I am not allowed to do so.

Hope I am not posting in the wrong section.

[skullatbash]

you need to be premium = donate at least once