What are impermanent losses. Can I lose some of my crowns when the exchange rate changes when I have liquidity tokens?

Price Divergence may cause some loss of funds that have the opportunity to recover if price fluctuates positively in the future. This is known as impermanent loss, and it's common in traditional finance as well. If the price changes at the moment of exchange, you may experience some loss, so always pay very close attention to price at the time of exchange. Binance has a detailed writeup about Impermanent Loss that goes into great detail, and we recommend it. https://www.binance.com/uk-UA/support/faq/7b6256ceba3840dcaecdd922675ec0c3