Ok thanks ! I don't use the pro features at the moment, ad blocking in Safari is sufficient. Was using Purify, but as it doesn't work on iOS 11 beta 1 (it has too much rules and Safari cannot load them, as I read here : https://github.com/AdguardTeam/AdguardForiOS/issues/407), so why not test...
I'm not using system-wide ad blocking, but I'm just wondering why there are 2 status buttons : one on the main settings page :
And one on the "Sytsem-wide Ad Blocking" page :
Why 2 settings ? Why one of them is checked by default, despite system-wide ad blocking not enabled ?