Hello,
Ecotransport demo contains next pages – https://i.gyazo.com/93276b20aba417cba7c2398d29f5edf1.png There is no Contact us page, it is one-page demo, so edit the menu and change these links – https://i.gyazo.com/79db4608242bc4a8270812767fc7fd8b.png to your Home page link.
Regards