You can install our site as a web app on your iOS device by utilizing the Add to Home Screen feature in Safari. Please see this thread for more details on this.
Note: This feature may not be available in some browsers.
Same issue, for the last week or two when I got back to my car, it shows there are sentry mode events, but can't show any recordings, I tried unplug and plug, reformat the usb drive, still no luck.