Add to card works for me.
There is no "Contact Us' on the products page, only a "Contacts" button, which works fine.
Send Us a Message button creates a pop up form, works fine.
Contact page is not broken, google reCaptcha problem is yours to own. Accept their spam protection methods or don't use...
It is usually just messing with the controller or display... No way is it the perfect crime.
Just don't go hauling ass down the street at 40km/h without pedalling and no one will bat an eye.