Doesn't Work if I Modify the Default search.php

This plugin works great except for one issue. The standard WP search form is as follows:

<form role="search" method="get" id="searchform" class="searchform" action="<?php echo esc_url( home_url( '/' ) ); ?>">
	<div>
		<label class="screen-reader-text" for="s"><?php _x( 'Search for:', 'label' ); ?></label>
		<input type="text" value="<?php echo get_search_query(); ?>" name="s" id="s" />
		<input type="submit" id="searchsubmit" value="<?php echo esc_attr_x( 'Search', 'submit button' ); ?>" />
	</div>
</form>

But I need to edit the action from home URL to include the “members” URL parameter. But anytime I change the search form’s action AT ALL the dropdown suggester stops working. I cannot add any parameter to the URL without it disabling the dropdown suggester.

How can I redirect to the correct url (or edit the default form at all) while still keeping the dropdown suggester active?

Thanks.

https://www.ads-software.com/plugins/buddypress-global-search/