https://www.pcgamer.com/bethesda-asks-us-all-not-to-click-on-anything-while-it-fixes-the-fallout-76-pc-beta-launcher/

I've been sitting here today watching the Bethesda launcher's Fallout 76 beta timer run down, knowing it would expire two hours early and wondering why. Everything Bethesda has published stated the PC beta would begin at 4 pm Pacific, but the timer was two hours ahead, and clicking on it showed a 2 pm start. I even helpfully (not that helpfully) tried to point this out to Bethesda on Twitter:

When the timer expired, the launcher told me (eventually) that my copy of Fallout 76 was being unlocked, then displayed a 'Preloaded' button, which I clicked, at which point it tried to download the preload again. Which is weird! It's preloaded, there's no need to re-preload it. I hope. (Update: it is now in fact making me re-download the preload. Sigh!)