https://www.gamespot.com/articles/sea-of-thieves-beta-now-available-but-not-working-/1100-6456306/

Update: Rare has announced it is in the process of deploying a fix for the "too early" error message that many players have encountered when trying to access the Sea of Thieves closed beta. "Good news for those currently experiencing the 'too early' error when trying to access the Closed Beta--a fix will be rolled out for you in the next few hours! We'll let you know when this goes live," the developer tweeted. We'll update this story with any further developments.

The original story follows.