Please query your address before August 28, 2021. to see if your failed airdrop can be reviewed again.
Query your address on this airdrop form.
If you think you indeed finished the tasks, you can report to ask for review.
After 24 hours, you can try to query and withdraw again.
After the review, if the result is still not approved, it means that you didn't finish your tasks after at least one moderator reviewed. Then, there is no more report to review service provided for rejected airdrop.