I had some issues so I decided not to target an audience below 18 for all my apps (if they contain ads). this makes life easier.
hmmm..., now I understand why I have such a low install rate on my games
The problem is audience below 13 years old. You have to select target audiences when you publish a game, so if you set the range 9-13 as one of your target (not the only), you have to follow the families policies, wich may be a pain. If you don't select that range, google may think (and will think, for sure) that your game (icon, name, screenshots...) may be appealing for children, so a label that says "Not designed for children" will appear next to your game, wich is harmfull for ASO.
I really don't know what to do, as I included the code above and the guy that reviewed my game saw an Aliexpress ad, so my update was rejected. I've had multiple rejections so I'm a little afraid now.
I think I'll add a neutral age selection screen at the first run of the game, and if the age is below 13 I'll show no ads until I find how to deal with the
setTagForChildDirectedTreatment thing