The “last 30 days” score gives you a score for posts/comments that you submitted in the last 30 days, not the downvotes/upvotes you received in that duration. So if people downvoted comments of yours from further back, it wouldn’t be counted.
The “last 30 days” score gives you a score for posts/comments that you submitted in the last 30 days, not the downvotes/upvotes you received in that duration. So if people downvoted comments of yours from further back, it wouldn’t be counted.