静态<a href=""> not working correctly in my project

Question

my website had two static URL placed at header sections that used to switch between home page and contact page. I found out that it is working well when I logged in as admin but these two links not working after I logged out. The problem is that it only dynamically render content area once I click on the link. I need every click I made will jump to another page. But currently, it looks like it didn't make a new request and refresh the page. I don't know what's happening about it. Please help me out I am so struggling about it.