Stephan,
I've confirmed my API public/private key works by using a PHP Class (
https://gist.github.com/mkraemer/7483878 (I forked it for use with PHP pre 5.4)). I'm able to use getAccountData successfully.
I haven't deposited anything into my account yet, so I'll be happy to supply my public/private key for testing and then later revoke the key.
Please let me know what action to take so I can get the trading working on BTCChina!
Cheers
Cazz0r
BTC China keys is not working for me too, same error. I don't think it has something to do with activation because I did generate it two days ago.