Email係有ID
應該係得畀錢嘅人先有呢個ID
搵Transaction ID方法
https://support.humblebundle.com/hc/en-us/articles/202556850-Finding-Your-Humble-Transaction-ID
仲有個佢唔覆嘅可能係超咗時
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冇晒key而唔想等想退錢要60日內申請
Regarding Exhausted Keys
For bundles, we will do our best to maintain a 60-day refund policy if you haven't been able to reveal a key for an item in your purchase.
For store purchases, we will offer a 60-day refund policy if the keys for a particular product are exhausted, and you have been unable to reveal the key.
For Humble Choice, we maintain the maximum 30-day refund policy with no keys revealed. Unfortunately, even if multiple games are exhausted in a month of Choice, if any keys are revealed, we are unable to proceed with a refund.