New posts

I’ve had a wordpress account and website for over six months and have followers. Each time I posted something new I would get visits. But the last three weeks, I’ve posted four new posts and no one’s been by to visit. This sudden stop of visitors has me suspicious. Does anybody have any theories as to why this could be? According to wordpress, subscriptions delivery is under “instant email delivery.” So an email should be sent. I know for a fact that one of my followers is not receiving these emails. Has something happened to that email system?