17×15=255。
As long as it does not exceed 255, you can keep 255 points and claim two at once, ensuring you receive two every 15 days.
For example, you can keep tonight's airdrop until tomorrow morning or afternoon to claim it, and then continue to claim the next day's airdrop, deducting 30 points all at once on the third day.
Then wait for 15 days to replenish the 30 points before claiming two again.
As long as it does not exceed 255, you can keep 255 points and claim two at once, ensuring you receive two every 15 days.
For example, you can keep tonight's airdrop until tomorrow morning or afternoon to claim it, and then continue to claim the next day's airdrop, deducting 30 points all at once on the third day.
Then wait for 15 days to replenish the 30 points before claiming two again.