You do not seem to have downloaded more than 250 torrents, so it would appear that the list in your profile of completed torrents is as complete is it possibly can be. The only possible exception to what may be missing is any torrents that were removed either because they were a duplicate, or were subsequently subjected to a valid DMCA removal request.
You can find this list by clicking on [you] in the top left corner of the page, then by scrolling down towards the bottom of the page and clicking on "Show Completed Torrents".
Thanks!