The price of CSRP never hit 2,500 $. How can I buy it at this price?

CSPR11 landed at the Open Sesame Exchange at 19:00. I am going to make a new position. I don’t know how to buy it at 2500 at 19:01. The highest position has not risen to 2500 [d83d][dcb2], and I was in my account at that time. There is about RMB 9,500. I buy 100% of all my orders. Why is there more than RMB 1,000 in my account after I buy? Now I am communicating with the gate.io platform by email