Sorry for the delayed response.
I issued the infraction because of the video. In the video you were repeatedly skipping shotgun animation, which allowed you to shoot/move faster than normal speed. Also it caused your player model to desync horribly. Means your damage could be interrupted by that deysync.
As said above, the infraction will stay and I'll inform
@arni to unprivate/reupload the video, for your eyes, to see it yourself.