Good evening, this is my first time participating in this game. I scored 645 points in today's competition. Accordingly, when I try to order 2 T-shirts from the store for 250 Eolymp Mints, it says that your balance is 0.If it's possible, help me get the gift

Hello, why am I ranked lower than many other participants when I scored the same points and I don't have a ranking number? What rank am I now in and what prize or certificate will we receive for this competition? Please answer if possible.