This is essentially a clone of closed issue #69 since the problem still persists with the latest release. I'm using Wordpress 5.8.1, Geo-my-wp 3.7.1, Posts Locator extension.

When I submit the search form on my site, I get a 404 error because of the page URL parameter. An example of the URL params from a search:

?address%5B%5D=Baltimore%2C+MD%2C+USA&page=1&per_page=10&lat=39.290385&lng=-76.612189&form=1&action=fs

This would lead to a 404. However if I change page= to paged=, it works again, and correctly paginates. I'm not sure if this is the issue, but I noticed that page is a reserved query variable in Wordpress: https://codex.wordpress.org/WordPress_Query_Vars

I tried this fix but it did not work. The only workaround I was able to find was patching includes/template-functions/class-gmw-search-form-helper.php:

408,413c408
< 		$output .= "<input type=\"hidden\" id=\"gmw-page-{$id}\" class=\"gmw-page\" name=\"page\" value=\"1\" />";
<
< 		// Fix for home page pagination when going to the first page.
< 		if ( is_front_page() || is_single() ) {
< 			$output .= "<input type=\"hidden\" id=\"gmw-paged-{$id}\" class=\"gmw-paged\" name=\"paged\" value=\"1\" />";
< 		}
---
> 		$output .= "<input type=\"hidden\" id=\"gmw-paged-{$id}\" class=\"gmw-paged\" name=\"paged\" value=\"1\" />";

I will submit a pull request with this patch shortly.