I have often had far more than four shops on my assignment list when I am doing a route, and I can still see the lists of available shops at those times, so I am not sure what is governing what you can see.
My advice would be to call your scheduler. I have been told by EPMS staff to call because they are really quite bad at keeping up with email.
Based in MD, near DC
Shopping from the Carolinas to New York
Have video cam; will travel
Poor customer service? Don't get mad; get video.