Approved comment limit not resetting

I have been using Cusdis on my website (https://oakreef.ie/) for a few months on a free plan and I’ve noticed that the the approved comment limit doesn’t seem to be resetting. It’s currently at “Approve comments: 101 / 100” (I am not sure how it went to 101 either) and counting I have had a little less than fifty comments since the start of December.