I’m having a similar issue, but haven’t found a solution yet. I’ve created a WordPress Page called ‘Photography’ that uses a template file I have written. The template file (php) brings in one my flickr set based on the get value. e.g. photography.php?s=456487984654. But because the Page address is https://mysite.com/photography there is no .php file to amend it to. If I try directly sending it to photography.php I get defaulted to my WP search results page with no results.
Anyone figured out to use the GET method with Pages?