Unable to see my web page after moving it into different directory

I created a new landing page and placed it in public_html directory. I am able to access it, but when I moved my older website into a new directory after creating a new directory in public_html folder, I can't access it. I create a folder with the name of ow and moved the website into it, but after entering the url http://ift.tt/2Ai6kJv, all I see is a blank page. I moved it back and it was visible again. I want to access both of websites at same time. I tried to rename it to index-old.php and visited http://ift.tt/2Cy9w9C but I saw the same blank page again. It's a non-wordpress website, I have searched a lot about it but I can't find any solution. Any kind of help in this regard will be much appreciated.