Cortana disappeared! Help!

[Captain_Eric]

My Cortana app disappeared from my Lumia 1520.3 running 10512. Probably, it was my changing the "region" settings while doing a work-around to update apps, but that's another story.

How can I get her back?

 

[Alain_A]

What was the region settings before?
And so you still have insider preview active?