I assumed that the paper towel went in after lock down so the turner is not moving at that point.
But the paper towel may impede air circulation over the reservoirs and thus humidity levels.
I know they responded to your call for the need.
I was wondering how they actually got it fabricated so quickly.....
...usually something like that requires a mold which is not always a quick process.
ETA: Just recalled that the Incuview had this same issue, chicks getting nicked by the fan...