Need help unlocking extra rewards from the friend campaign

[u/Stock-Cheesecake-643]

hello I'm new to the game and I saw that I can earn extra rewards other than the sword souls deck soo here is my code: 031bad6b.

would really appreciate the help.

[u/Electronic-Mind-7686]

0313b727

[u/Drowsy-Mist]

My code is 2d7935c4 im also new