I downloaded your files to my desktop. Then, after making changes in your "get Started" help file, I used my server's (goDaddy) ftp client to transfer the files. I then tested the application on my website and it worked as expected. However, I wanted the redirect to go to my home or, better yet, the URL it was blocking acces to. Right now it takes me to the Update Page and when I press the link on the page I get a page with one line indicating that my email has been verified. The error resulted when I attempted to change the 2 instances of "successRedirect" => "index.php", as shown. If I then correct the successRedirect statement to its original form, I continue to get the error. The only way to correct seems to be reinstallation of all the original files on the server.
That is my primary issue. Of much lesser importance is the registration form does not specify the criteria for adding a password in the correct format. I see the statement in your code, but it does not appear on the page during initial registration.