it says e-mail to you? but no email in "contact support"

Hello so i need help i think i accidentally messed up given my mate an early access. i gave him the steam key i was supposed to give out. as the whole text comfused me. as it said early access. so i need help. as it said "Please note this key only unlocks the client in your library, it will not provide early access to your account and should not be given away." so pls help :) ty