I don't like how Binance manages coupons for USDC spot trades. I had collected 200 points and wanted to exchange them for a 2 USDC coupon. I even saw the coupon available in the activity center. When I tried to redeem it, it said that the coupon had already been fully redeemed, even though it wasn't true. My 200 points remained, but when I returned to the activity center, the coupon was no longer there, and the lowest available spot coupon required 300 points, which I don't have. It's not fair.