Your position was closed on the market. Such “gaps in the order book” are typical for coins with a low trading volume or during periods of high market volatility, for example, during a fast dump of a coin.
You must check:
- Candles while a transaction is being closed: select the pair you need on the exchange and click on the minute candles. Find the candles corresponding to the time your order was fulfilled and you will see with a 98% probability why the sale on the market created a loss of specifically -25%, not the -10% you indicated. A description of the sale on the market is available via this link.
- The price settings at which the following was carried out. A description of the following options can be found here.