It might be that sometimes there is not a 100% transaction and it gets canceled, only a part was transacted. As for buying again, it could be a reverse order with a price, and I would buy in; I have also experienced this situation. You're doing fine, I bought two orders at 1030u last month without knowing, and the next day 👀 I realized the balance was wrong, waited two days but it didn't go up, and in the end, I had to cut losses and lost over 200u.