[CC: JollyGood]

It's actually explained by them in between-lines, and been explained to you by me [in form of educated theory] throughout the entire thread, sealed by BC.Game Support's report of the video call.

Initially, they suspected that your "mom" is performing KYC under duress, of which our suspicion gets stronger and stronger as the case and posts on this thread gets further and you show questionable traits, like the cluelessness of what "under duress" is about, that you basically has zero knowledge of your situation and surroundings when you took that KYC picture.

But, to be short, from BC side, and about what violation you did, they suspected you trying to circumvent a restriction they put on you [the son], be it account limitation, self exclusion, account ban, falsifying ID, and the likes, that your mom shows duress because she performed that KYC against her will, i.e. you forced her.

Bottom line,
What violation you did: a possible attempt to circumvent account limitation and providing fake KYC.
Physical evidence: the video call, where the "real player" [the mom] basically clueless about the game she's been playing for a while.
What terms in the ToS related to it: I have them safely stored for you in my gallery, but I believe it'll be best to start make that lawyer of yours useful. Here's the link to their ToS, I believe he can ventured a very-well-educated guess of what violation you did.