Trophies and achievements are awarded automatically once specific criteria are met — for example, some trophies require a certain number of consecutive on-time payments, meaning a single late payment can reset that streak even if the total number of on-time payments is high.
If a trophy seems missing, check whether the underlying criteria (streak length, activity count, etc.) were fully met rather than assuming it's a display issue — this is usually a working-as-intended situation rather than a bug. If you've confirmed the criteria were met and the trophy still isn't showing, contact support with the specific trophy and dates involved.