There are 6 types of survey statuses on PledgeBox, "Not invited", "Pending", "In Progress", "Completed", "Canceled", and "Dropped".
1）Not Invited - Survey has not been sent.
2）Pending - Survey has been sent but has not been opened yet.
3）In Progress - Survey has been sent and backers opened it.
4）Completed - Survey is completed.
5）Canceled - The order has been canceled by the creator, and backers will not receive any email notifications.
6）Dropped - Backers failed to make payment on Kickstarter. The backer will receive a survey invitation but there’s 0 credit in the order and the backer needs to pay the full price of the reward (and shipping fee) to complete the survey.