The company was being investigated before Biden Jnr joined the Board. When the EU, IMF, USA put pressure on to have the prosecutor removed the case had laid dormant for two years. Several months after Biden, as the USA’s rep threatened to withhold aid the prosecutor was sacked and shortly thereafter the payment was made. The new prosecutor was a tad more zealous at bringing corruption cases to trial. The case against the company was reopened and no case could be found to warrant prosecution. Biden Jnr had been brought on board, with others, to present a more respectable image. Consultants and lobbyists often lack technical expertise but bring management cred and contacts - eg ex members of Parliament. Several US news agencies have also investigated the veracity of the allegations but found no smoking gun.Huh the only knots I see are from you trying to justify your undergraduate understanding of law and how people behave in the real world.
I have constantly written there needs a full investigation, the fact you don't understand that or that you didn't know about Biden's son tells me you are narrowly focused.