I had the same issue as in this post: https://leetcode.com/discuss/feedback/834246/September-leetcoding-challenge-Question-not-marked-as-completed-Even-when-solved

Though I remembered I did it, I still spent 70 leetcode points to redeem a time travel ticket to complete that question again. But when I check my activity I found I did that question on Sep 1 shown as the image below. So I am wondering if I could get my 70 leetcode points back since I bought the time travel ticket just because of a leetcode data failure. Thanks.