Not getting the exact post selected in settings

Hello! I would like to fix this problem please: In MaxPosts of every rule I've selected to create 50 post every time this rule runs. But is not getting exactly that number. Whys is that? Maybe it has any time period for to get posts from the past? I mean, maybe the rule gets from the last 12 hours something like this? The pother problem is the rules are not running every hour as i've marked, althoug Ive changed as you soggest, from Wp Cron to real Cron running from cron-job.org and working perfectly every 10 minutes. Any suggestion?