The CP code is not from rux. (It means community portal). There are several legendary hats that appear in the chests of the portal, only that their probability is very, very low. Some players have appeared in the random rotation of legendary RUX items but others, like me, has not arrived, and I have always bought the Rux items.
It is absolutely a Rux legendary hat. It was sold the week when Bling Pylon mech, Bedazzled Bolt Blaster and Vampweed were sold for the first time. It is called Banana Bunker and is is labelled CP in the sticker book. I stopped getting anything but consumables from the portal chests over a month ago.
See screenshot of my book and discussion here:
https://www.reddit.com/r/PvZGardenWarfare/comments/9mk2x1/is_there_a_drop_rate_for_cp_stickers/
If you look up germanshu's video of the complete sticker book you can see this is Banana Bunker. And video from Wolfy showing that week's RUX offerings here:
https://www.youtube.com/watch?v=6hBUSf8J5YA Time stamp: 2 min.
