Discobot is spamming a user

One of my moderators is also being spammed by the “Now that you’ve been promoted, it’s time to learn about some advanced features!” message. They’ve already done the tutorial, but keep being sent the message, at least 12 times by now. They’ve tried telling discobot to skip, but it hasn’t made a difference. Any ideas? Any way to check if something is broken in sidekiq?