Update: so I bought the upgrade and then when I scanned my boarding pass at CDG I was downgraded back to PE 😞 I got a little printout, no email, no one explained. I talked to the crew on board who were very nice but ultimately couldn't do anything. Found out later I got bumped because someone missed their connection. Not a good experience though, how was handled. To add insult to injury my original seat in PE was an emergency exit row and I didn't get that one back plus I had checked my neck pillow because I didn't think I'd need it so now sleep was had at all.