Filter the Google Fonts weights loaded in Memberlite.

my_memberlite_google_fonts_weights.php

<?php // Do not copy this tag
/**
 * Filter the Google Font weights loaded in Memberlite (as of version 4.0.1).
 *
 * Add this code below to a plugin for theme customizations.
*/
function my_memberlite_google_fonts_weights( $font_weights ) {
	$font_weights = '300,400,700,900';
	return $font_weights;
}
add_filter( 'memberlite_google_fonts_weights', 'my_memberlite_google_fonts_weights' );