Editing Wishlist Members Clickbank Thank You & Registration Page?

I was confused about the auto generated clickbank thank you & registration page created by Wishlist Member. I searched all over the internet and couldn’t find this answer anywhere so I figured I would post the answer here. Maybe it will help someone out. Here is the conversation I had with Wishlist Member Support:

I am trying to set up the thank you page after some one pays with clickbank and find it rather strange that I can’t edit it.

In the “Integration” section, wishlist creates a thank you url for me and the video says to use this.

Only problem is it doesn’t say anything in this extension:  /index.php/register/LPXYtv

Do I have to edit this file through FTP or can it be done on WordPress?

I only saw a similar question in the forums with no answer.

Hi There Eric,
The “Thank You URL” in our Clickbank Integration Step 1 is not customizable.. It is a URL that captures data from clickbank after the member pays. It confirms if the member really paid and redirect them to a registration page where they provide their account info. Therefore, when you try to access that URL directly, it wont work. It is a security measure so that other people wont be able to pass it around and have then register on your site for free.
Hope that clarifies everything. Please let me know if you need anything else.
Thanks