Fix Fiverr Clone Script php

I have the very popular fiverr.com clone script in PHP where are so many errors still not working I paid £38 pounds for the software everything was working on developer website the company

but when I install the software myself it does not work

please find files attached to take a look the software came from http://www.alstrasoft.com/fiverr-clone.htm


please help me to fix the problem has I need to make profit from my website ASAP