Filtering ignored when “load more” clicked

I have a filter that refines a list of countries based on their respective region (dropdown menu) and mobile network connectivity (checkboxes).

The filter works on custom posts loaded within an Elementor Loop Grid.

The Loop Grid has “Load on Click” pagination which reveals more entries when clicked – however, the when this happens the filtering rules are ignored.

For example, filtering by Africa shows the initial 20 correctly, but loading more then shows countries from other regions too.

The page I need help with: [log in to see the link]