Finally got through on YS for size 10. Like others have mentioned, you will receive an error once you get past the line. You need to refresh. And you will get an error on every page afterwards, just need to refresh. Eventually you will reach the confirmation page.
How long does it take to receive the discount code from Matches after you enter your email? I keep getting the message "Sorry, There's a delay processing your reward. We'll contact you by email."