I have SOMa in steam library, but when i try GOG Connect, i see "Not found in your Steam library", but i have this game in steam !
Anyone has similar problem and resolve this ?

EDIT: i found solution ... "Refresh" button ;)

Same problem. I've owned SOMA since August on Steam, and this far, Connect won't detect it.

EDIT: Came back a day later and it worked. Also detected a game I didn't even realize it has missed the first time.