But when I want to make any operation with those 24 usdt, it appears to me that they are frozen in a supposed manual purchase order, and I do not have any pending operation in manual orders, has something similar happened to someone?
Trailing profit is means to trail the market movement. It shows you current condition of the bot, which is probably has making 24$. Since the bot is still running, the token is not sold yet, thus this profit is not realized yet. You cannot use unrealized profit. Make sure the bot is stopped first and the token is sold, then after that the money will become free to use for another trades.