If you are seeing the "Oops, looks like you did something our system doesn't like" error message, then it is likely one of two reasons:
1. The message/comment you are trying to post is not personalized enough. In this case, switch things up and craft a message that's different from the previous messages you've sent.
2. The message/comment you are trying to post includes links that have been blocked by wattpad for preventative measures. Read here for more info on why we are doing this: http://support.wattpad.com/entries/23219556