The event will last 2 more days as compensation for the bug.
Official Thread: here
Hasty translation:
‘Morning everyone,
as you pointed out, the companions weren’t available on exploration on launch.
The bug has been fixed.
As compensation, the event will last 2 more days, ending Jan 5 at midnight.
Sorry for the inconvenience,
happy explorations
Authors
The creator of this site. (Not so) Secretly a cat.