hey,
i tried several times to connect with your server. i am getting this error
http://prntscr.com/m65zcj
Please check your credentials again.
or replace the codes with this one via sftp.
/wp-content/plugins/wplms-woocommerce-memberships/classes/wplms-wm.class.php file :http://prntscr.com/m5sruu
$check = get_user_meta($user_id,$course_id,true);
if( !empty($check) && $check > time() )
return;