Steam Mobile Authenticator Recovery Code

[Rawity]

So, I was selling a Steam account to a stranger I met on facebook. The account had Steam Mobile Authenticator on, and I accidently sent him my recovery code thinking (Thought he needed it to change email). But, it seems the recovery code is to all my 3 accounts, and I've a main account with some fairly expensive CS:GO skins. So I was wondering, if he could access all my accounts by using the recovery code (He knows my username, but not password/email) 

[JackTheYoungBuilder]

Does he know all of your accounts' usernames? 

[Rawity]

Does he know all of your accounts' usernames? 

Only my main account because I accidently clicked a wrong email with screensharing on and the account I sold him

[JackTheYoungBuilder]

hmm.... Transfer some skins. Also did you have ur username changed while on steam? Like the one you signed up with, and then you changed it to something else?

[Rawity]

hmm.... Transfer some skins. Also did you have ur username changed while on steam? Like the one you signed up with, and then you changed it to something else?

Wait you can change username!? Also, I'm currently trade banned for 7 days as I disabled the authenticator on the wrong account lol