page-slug problem

Before I start a disclaimer:

I have tried every tutorial out there and searched everywhere to fix my problem!

I am trying to install a google adsense search in my page. I have followed all the different steps in the tutorials and tried different plugins that help with this, but the problem still remains.

My wordpress is not finding my page slug which is the “action” page for the google adsense form. I get a 404 error.

I have confirmed that the page-slug is correct in the database and the form. I have tried https://www.tenterhooks.mbmontessori.com/google-search and https://www.tenterhooks.mbmontessori.com/google-search/

I am wondering if this is a permalink issue. I have the default settings because when I turn on the rewrite option my pages and images break.

Any help appreciated.