So how do i unlock the earthen?

[MetalHead-2458909 (MetalHead)]

It’s been fixed.

Today's new content was temporarily disabled -- now resolved

Updated 11:30 a.m. PDT We’ve fixed the issue and re-enabled the content in-game. A few minutes ago, we disabled the new content that had previously unlocked today. This was a necessary step for us to be able to investigate and address a priority issue. We will bring this week’s new content back up as soon as we’ve fixed the bug. Thank you for your patience and understanding.