The child pages are not redirected correctly

Hi,

Am hosting our website https://www.aircord.com at godaddy in a deluxe hosting account and inside its directory we created another directory for our other website https://www.hamburgini.com (which has the problem) and installed wordpress on it (www.aircord.com also have wordpress but working fine).

After finishing all the things and uploaded the site (www.hamburgini.com), the homepage & the admin area are working fine, except the child pages, some of them takes to the same page on https://www.aircord.com (like About us & Contact us) and the others gives a “404 Page not found” Error (like Our Menu, Ingredients & Locations).

I tried to save the permalink and what it does is creating a web.config file and gives a “500 (Internal Server) Error” and never show any page at all (even the homepage & admin area), and when i remove this web.config file the homepage & admin appears again, but the child pages still not.

Any idea where is the problem?

Thanks