How to create a ticket page

Create a new page from Pages > Add New. Name it Ticket/Help/Support as you like, and publish it.

No need to add any shortcode or content, keep the page blank

Then Go to Support Genix > Setting and Set the ticket page

Set the ticket page
Set the ticket page

But, if you want to keep your ticket page header/footer the same as other pages of your website, you may create that by following a doc. In that case, do not add that as a ticket page from Support Genix Setting above.