Hi, sorry for my late reply.
There could be a couple of reasons for the dust not to be cleaned.
We have a high demand and some days Dustsweeper needs to skip some comments to be able to keep up. We have set a minimum threshold for the Voting Power where Dusty stops voting.
Self-votes are not allowed, so the comment needs to have at least one vote from someone else.
Ok, so, is my subscription still ongoing? I had at least 4 comment with upvotes in the last 3 days, they're all been skipped, I don't upvote my own comments........ Thank you.
I have checked the history of your account and it is all in order.
It is all linked to the increase in demand where the bot had to skip up to 100 accounts in the last few days. So, unfortunately, your comments fell into that window.
2K more SP has just recently been added, so I hope we can keep up with the increased demand.