TPO Roof Mold spots

[Mstench]

Help!! I have a 2020 micro Minnie 2108 DS parked in Florida. Every 3 months I go on the roof and clean it like my owners manual states. My proplem is I have these spots , I think mold spots on the roof and nothing seems to work . Here is what I've tried the roof cleaner sold in the bottle called Dicor roof guard roof cleaner , I've used dawn and water , laundry detergent and water , I've used bleach ( watered down 50/50 ), I've used an electric power washer 1450 psi and can't seem to get rid of these spots . Any ideas , I know there are alot of smart people here so would like some help , also used CLR mold and mildew remover.