Need Somebody To Fix My HTTPWebRequest Project - Minor Bug

I am looking for somebody to FIX my HTTPWebRequest account creator program. At the moment the program runs smoothly all the way through to a particular URL (Line 211) where when using a browser a cookies page would be shown / cookies would be set making the user logged in, whereas this page is not appearing when running the same headers through the program. I am likely missing something very small but could do with a second set of eyes to check this program for me! Source code attached, please check source code before bidding to confirm that you can see the issue.