weglot_url_auto_redirect

This filter can be use to modify the url where use will be redirect if the autoswitch option is activate.

When the browser-language auto-redirect runs, this filter lets you change the destination URL.

add_filter( 'weglot_url_auto_redirect', 'custom_weglot_url_auto_redirect' );
function custom_weglot_url_auto_redirect( $url ) {
    return $url;
}