The answer to this is simple and slightly embarrassing... Workbox (a library that Gatsby's offline plugin used) had a bug and your browser has it. We fixed the problem on the site, but there's no way for us to force your browser to update due to this bug. Try clearing the site data in your browser settings or use another browser.
(I’m sending this so I can minimize the number of emails from people upset that they missed the discount. This way, I can say I gave you all plenty of warning that…)
Early Bird pricing ends tonight!
By the way, as I've stated many times, we are working on parity purchasing power for countries where the exchange rate for the dollar makes the course very expensive. If my guesses are correct though, 40% will likely be the lowest price you will get for the course even when we are able to implement PPP (and when PPP is implemented, it will only be applied to the standard and basic levels, not Pro, so the price you see now is the lowest you'll ever see it at!) Don't wait!
Also, we're still working on team licenses. I don't know how the pricing structure will be for that unfortunately, but if you'd like to be notified when it's available, click here.
P.S. If you missed it, yesterday at React Conf, Dan Abramov announced a new proposal for React function components that is mind blowingly awesome. In the excitement of the announcement, I created this playlist of 14 videos on Egghead.io absolutely free: "React Hooks and Suspense". Enjoy!