Dear meeyou, excuse me for trorbling you again,I've entered daum and the site successfully,but I couldn't send a message ,what's the matter with it?

meeyou, I want to leave a message in "from China",and touch the "pen" then turn to another page, there appears a large blank for writing the message,but it can't be sent out after I touch the "fix" below,I don't know if I am right.