Guys, it’s been sooo long that I have been reading this manhua, correct me if I’m wron...

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And what happened to that “pass” to the black market ( ?? I don’t remember correctly ) that some guy stole from her?

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I'm not sure if that is a real Phoenix or just some extra power? She did used that in the arc before she came to this 2 star academy to kill those who killed her subordinate.
As for the stolen pass, that was long long ago.. it was resolved easily..
Go read again, you wont be disappointed ٩(๑❛ᴗ❛๑)۶

what happened to that baby fox beast she got when she stole the phoenix egg?

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That Phoenix still a small kid. He stays and cultivates in Feng Jiu's ring realm, he can out sometime, but mostly he will stay in the ring, cause he's still weak and powerless.

That black token, the black market people take care of it, since it's useless to steal it. That card is for VVIP member. If they want to use it, they must know who the owner of that card and verify it, so they can't carelessly take order from VVIP card.
In recent novel chapter, an elder from black market steals Feng Jiu's token, Feng Jiu gives him... well, haha. a strange pill that makes his skin and meat kind of fall of from their body. And the black market chief punishes and kicks him off from black market.

maybe you mix with other story? there's no baby fox beast here, and she doesn't steal phoenix egg.

I think it might be pupillary master