How to self report second act score

So I have taken the act 2 times and thats all. I already sent a score report with my best score, and that test date had better scores in every category. However, in the common app when I try to self report my other score per Stanford’s policy, there is no where to do it. Should I just send them an email with my second score information. Any help is appreciated!

On the common app, you can self report scores in the additional information section in the writing tab.