Unable to “View Site” in edit mode with Coming Soon Enabled – مرجع علم و فناوری

I am still working on my website and it is not ready to go public so I installed the Coming Soon plugin. I can edit individual pages but when I then try to preview the changes I can only see that page and the home page but no others as the Coming Soon page pops up.

How can I edit this fully please

The page I need help with: [log in to see the link]