I was loseing my mind trying to figure this out so once i found the solutions i figured i would pass the info.
1st issue: getting the members list to update automatically.
For me the issue was i created a list. all you need to do is use this short code. [members-list=search=true alpha=true pagination=true pagination2=true sort=true radius]
2nd issue: Getting rid of the zip code search option. All you need to do is add =false to the short code. Here is the completed short code
[members-list=search=true alpha=true pagination=true pagination2=true sort=true radius=false] Hope this helps