[lm28469]

> my wife sent me a picture of my daughter working on a puzzle.

> her Instagram was showing ads for a store that was selling the same type of puzzle

How did she take the pic ?

[giarc]

I think that's an important question. Did user take the photo within the app, thereby skipping the camera roll, or did they take the photo, then upload to WhatsApp from camera roll. If the latter than as someone else said, could be that Instagram had access to camera roll and decided to serve ads based upon the puzzle.