Board Game Arena

Hi all i take Premium today free for 1 mounths, my game is BANG and 7 WONDERS actually prefer but i dont see the expansion... how i can use it?

Are you asking about expansions to 7 Wonders? No expansions to 7 Wonders are implemented on BGA. You can discuss 7 Wonders further in the game specific subforum, where more 7 Wonders players (and maybe the dev?) might see it: https://boardgamearena.com/forum/viewforum.php?f=192.