If we find a previous installation_id, then we send `open`. If we don't find a previous installation_id, then we sent as `first open`. If we fail, we mark it as `open` so that we don't accidentally bloat our `first open` stats.
If we find a previous installation_id, then we send `open`. If we don't find a previous installation_id, then we sent as `first open`. If we fail, we mark it as `open` so that we don't accidentally bloat our `first open` stats.