Instyle Magazine - Digital version question

  1. Does anyone know, why the Digital version of Instyle does not generate the same time the hard copy arrives in your mail. I recieved June's issue a week ago, and gave it to my Mom, because I read it on my Ipad; yet it has yet to appear on my Ipad. Is this normal with magazine subscriptions? I am new to my Ipad and digital magazines.
  2. Mine always shows up a week or so later as well, I give the paper copy to my daughter and read the digital copy on my Nook.