The user was probably removed and replaced with the two new people.
Hi, I noticed there's a user with low quality posts on your spreadsheet. Maybe you'd want a replacement. I can write high quality posts.
Username: KingZee
Post Count: 437
BTC Address : 1KingZeeW97uLvngcUA3R6QJx18Fn78ddb
Can you sign a message from that address? There's huge gaps in your post history from August 24, 2016 to May 08, 2017 and then June 06, 2017 to September 06, 2018.
If you want a shot at this campaign you should probably follow what actmyname said, but also be more active here.