@holydarkness this is not about a proof that a warning was sent from Betby to XYes, this is about proof that there was arbitrage betting. For that you would need to have 2 bet slips, both with comparable stakes on the opposite outcomes of the same event. This is not do-able on the same bookmaker (because they have a bookie margin that makes it impossible to arb within the same book) so the 2nd betting slip would have to be from another book (for example Pinnacle) and it would be impossible for you nor XYes to have obtained this.