OK, I've just discovered log tracker. It's easy to block some IP ou domains... Well, after several black list addings, these ads diseapered. Cool ! Thanks !
Next time, I will know where I can configure Adguard.
I had Adguard on Android devices and it was pure joy to remove ads from apps.
New iOS user, I discover that
1/ I had to pay iOS app (2,29 euro) while I already have a Android licence... (well, I use it in my Android tablet now) .So.
2/ Filters are less efficient on iOS than Android. Sometimes...