I contacted with Accointing Twitter and they told me to post this here (Thanks, Max!).
The ACENT cryptocurrency ($ACE; https://coinmarketcap.com/currencies/acent/) is confused with ACE Tokenstars ($ACE; https://coinmarketcap.com/currencies/ace/) in the wallet in Kucoin, which causes the portfolio balance calculation to go wrong. Will it be fixed soon? ACENT also does not appear in Accointing to make the manual change in the transaction.
Thank you very much, cordial greetings,