The problem may be due to WinPcap not being installed, since the SnifferReactor depends on it.  The Pion installer attempts to install WinPcap if it doesn't find it already installed, and if it fails, you can't use SnifferReactor.
One thing you can try to see if WinPcap is the problem is to run Pion from the command line instead of as a service, as follows: open a command shell, cd to C:\Program Files (x86)\Atomic Labs\Pion\ and run start_pion.bat.  Now, open http://localhost:8888 and run the wizard again (there is a wizard link near the top if it doesn't start automatically).  This time, if WinPcap is the problem, when you get to the 'Select Capture Devices' page, you should get a dialog box saying something like "This application has failed to start because wpcap.dll was not found."

Unfortunately, some things can only be measured using page tags, and form abandonment is one of them.  The attached HTML file provides example code for tracking abandoned forms with Pion.  When a form is abandoned, the browser will send a 1-pixel image request (PION_selfTag) with query parameters (including last field) to your server.  Pion can easily be configured to detect these events and deliver them to your analytics provider for analysis.

Pion doesn't provide any analytics or reporting, just data capture, processing, integration and storage. For example, you can use Pion to capture data for Google Analytics (as an alternative to their page tags or server-side scripting). Or, you can use Pion to create custom data warehouses for real-time dashboards and business intelligence.
Although Pion captures all the traffic for your mobile device users, it does not have any mobile-specific reporting capabiltities.  Analytics vendors provide varying support on for mobile traffic reporting, and we recommend that you contact your vendor directly to understand which fields and reports they support.