In the mobile app, when viewing the tracking map for your tracker, locate the Flag icon on the map. Select the Flag icon and use the left/right arrows to cycle through all stops for the selected time range. If there are no stops in that time range (1-day range by default), the map focuses on the current teardrop location marker and will not show any stops.
To view past stops on the web app, go to gps.logistimatics.com and log into your account. Select your tracker to bring up the large tracking map. Then click on the icon near the top-left part of your map. This will allow you to toggle stops on/off. The web app can give you more of a zoomed-out view to view all your stops more conveniently than the mobile app on your phone.