Course Archive Page

Hi

I have a question about changing the Course Archive page.

I am trying to use the customised Tutor Advance Course Filter.
https://gist.github.com/nayeemch/9b1e749aba430850b2777dcb2bb1f74b

I have followed instructions and assigned the template to a page. It works perfectly. But when I try to choose this page as the default Course Archive page (in tutor > settings > course), the course filter page stays the same, and it doesn’t change to the new one.

How can this be achieved? Thanks a bunch