A bet is defined by its market, not only the event
Two bets on the same match can settle differently because they use different markets: match winner, totals, handicaps, player props or period results. Read the selection wording in the slip.
Odds express the bookmaker price at that moment, not a guarantee of probability. Compare the market and stake before confirmation and avoid using a recent win or loss as a reason to increase the next bet.
For disputed settlement, the useful details are event, market, selection and bet reference. Those are enough to identify the wager without sharing private account credentials.