I think you’re writing about this game:https://online-go.com/game/20731298 ?
This game has a reduced handicap of 1 (0.5 Komi, black plays first)
Iirc the handicap is reduced when one player has a deviation of more than 125. The deviation of your opponent was 136.
@anoek, is it intended, that handicap is reduced until deviation is smaller than 125, while ranks are considered stable below 160.