The crease? I doubt it.
No the stain
Take it to an experienced auto detailer shop. If anybody can get the stain out they can.
It's a new 2017 subaru Legacy the rest if the search are good
Try a good leather cleaner like Meguiars --------- http://www.meguiars.com/en/
I have been using Meguiar's G10900 Gold Class Rich Leather Cleaner & Conditioner Wipes
Follow up with a good leather conditioner.
Connolly Hide products are excellent. They probably are best on vat dyed leather rather than surface dyed.
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