I think u need to fix this sentence.

4. For players of our support team: leaking information will lead to a ban; being irresponsible for his working duties will lead to being expelled from the support team or even a ban.

to 4. For players of our support team: leaking information will lead to being expelled or even a ban for being irresponsible with their working duties.


since his u are trying to point at a person and not talking about in overall.