The counter in the popup is accurate: each blocked visit attempt is counted once. Reloading the warning page does not count, and visits to blocked-test.nudefend.com are never counted.
New in the popup: "Recently blocked", a list of sites blocked in this browser, with a "Clear list" button. The list is stored only in this browser and is never sent anywhere. Clearing the list also resets the counter.
This update resets the previous counter, so the count and the list start fresh together.
"Back to safety" no longer takes you to the address the blocked site redirects to.