Seller Fulfilled Prime

Hi All,
A while ago I tried SFP but after the trial decided it was not for me and deleted all my SFP listings. These last few days I have had a few Prime orders come through. This in itself has not been a problem as I managed to get all of the items out the same day but I just wondered whether anyone else had come across the same thing. I have checked my SFP Dashboard and it is showing negative SKU’s and Stats for the last 6 months.