I am not sure how the Welcome Kit is sent. I think it gets sent to your email that you registered with, but I could be wrong.
I will forward your message to the store team to try to get you some help.
If you are looking for the "contact us" in the future, you can find the button by scrolling all the way to the bottom of the page. You will see a few options at the bottom and one is "contact us" and another says "top" to bring you back to the top of the page.
Hope this helps