Dear experts, if I earn 15 points every day, and spend 15 points for the airdrop plus 15 points to cover the points that expire after 15 days, that totals 30 points. Then if I earn back 15 points every day, this means that every time I receive an airdrop I consume 15 points, plus the 15 points that expire after 15 days, which means I need to consume a total of 30 points. If this continues, your total points will keep decreasing. Once your points do not meet the standard, you can't catch up anymore. Does this mean that a Binance account can only participate in one airdrop task?