Well err, if it's any help then the knobs available for sale as a spare part. It looks like a MY13 so if it's still under some sort of warranty I'd try to see if that would cover that. If not: you'll have to take the whole center console apart to remove the gaiter as there's a ribbon cable to the knob that powers the LEDs. Don't think it's any harder on the new center console than on the old one, it's just finicky the first time until you get the hang of it.
No clips or hinges or anything that seem to have popped out of place? That's the only quick-fix I can think of albeit admittedly not very helpful.