adfly is a link monetization service but recently it has been showing pornographic ads without asking if the person is 18+, this can show kids inappropriate photos.
Look at these website reviews! adfly is BAD: https://www.mywot.com/en/scorecard/adf.ly
PERSONAL EXPERIENCE: I went to download some files and a porn site popped up, only being 11 this was not ok.
FIX: make adfly check its ads to be pg13 OR flat out delete adfly