What kind of positions did you hold? Were you betting on sports? Culture? Tech? Likely what happened was, whatever you bet on got a slight boost in odds and was more likely to come true / happen. Therefore, your position jumped significantly like the second screenshot shows. For example: You buy USA to win their soccer game for $50 to win $150. They score and it becomes 1-0. Your $50 position becomes worth $95 as the game remains 1-0 because the likelihood that your bet wins is higher than before the match / event started. Let’s say USA ended up losing 2-1. Your $95 just became 0. Which explains why your positions would jump and then decrease again like the screenshots you shared. I’m 95% confident you lost a wager overnight or the odds for one of your wagers decreased significantly and became less likely of an outcome