Early Acess keys

Hellow guys, how are you?

I was looking for my keys for EA of POE2 and I have 3 keys

1 for steam and POE1 (I think)
Path of Exile 2 Steam Client Key

and 2 for EA and they bot are used
+1 Path of Exile 2 Early Access Key

bot have the Used:True

I play in Steam so I understand having 1 key used there, but I dont know why the other key is used

Thanks all