404 Error — The requested document was not found on this server.

I am using godaddy hosting , when I visit https://exinprojects.com/exin_dynamic/ I can see website, aslo admin dashboard is also working, but when I click on any of menu options I get 404 error like below link https://exinprojects.com/exin_dynamic/about-us/

What can be the issue?
I have updated permalinks for few time, it did not work

Every other page apart from index page is giving error ‘404 not found’

please help.