I had faced this problem and I will tell you my story and my solution.
Sometimes when I want to send a ticket, buy mcoins (anything else on ws's site), I write the verification code and it takes time to load the next page, so I press many times on the "Send" button so it loads faster, but I actually discovered that this increases the time of loading the page much more by asking me to re-write another code, xD. So the solution is not to press on the "Send" button many time if the page didn't load fast.