My bet is that the contractors were incompetents who were hired based on political connections, and they both 1) just finished the app within the past week, and 2) never tested it after it was officially finalized. By bet is that they tested it weeks ago, it failed, they blamed the failure on a few bugs, they eventually marked those specific bugs fixed, then just prayed after shipping it. I know I'm being too specific, but
past trauma.
Major sign: Not only wasn't there a dry run before d-day, but they didn't even train the people expected to use the app on the app.
The corruption is traditional corrupt procurement (apparently connected to Buttigieg and the Clinton complex) rather than an attempt to fix the primary. Primary fixing will be done out in the open with sudden rule changes.