Bought Tier 4 Support Pack and accidently claimed wrong key

I bought the tier 4 support package for $160 and accidentally claimed the wrong code on steam. I think I was supposed to claim the "+1 Path of Exile 2 Early Access Key" on the website and give my brother the "Path of Exile 2 Steam Client Key". Anyways, I'm a first time player and the instructions were unclear. Please help me.