They renewed WBB for a third season so it's doing well enough.
It's a good show, definitely. But it still isn't drawing the big numbers they'd hoped for. CN doesn't really have much of a choice but to renew it. They don't have any other shows to renew. Everything's set to end right now, or is brand new.
(They wouldn't have ended WBB anyways, it's doing decent enough.) But watch out, once it dips under a million viewers, it will be on the chopping block rather quickly.
Right now it is hovering around 1.0 million to 1.1 million. So it is close. They were hoping in the 2 million range for this show, easily.
It is odd though, I never actively seek to go watch this show, but if it is on, I watch it. I really do enjoy it. It is a thoughtful show and deserves more viewers.