Steam game activation key issue!!!!

A beta for Block N Load was given for free once maybe you are just trying to activate another beta key?

Edit:

here check this, it says me the same that I already have the game even if I don't, because this is a beta key and I activated the beta before.

This key should say you the same because it's a beta, try to activate it just to test it.
Block n Load(beta)
M5KML-IA7LA-PQKK3

Also from where you got your key? giveaway? trade? store?

Are you sure your key is for Block N Load? Usually when steam says you have game you try to add it then offers installation of that game.

i didn't really get what's going on here but you might wanna check account details and remove the related license if that's the case. but be careful, once you remove it, it's gone for good.

btw thanks for using unrelated category.

edit: i guess you're using a beta key and its beta is over.

!!!!