Celtic Heroes

Well so I have received a message from NativeX today and in order to fix my problem they need my "Advertising ID".I have installed "the identifiers app"from the appstore but i have no idea how to use it.Can anyone help me?

If you are having issues please visit the support article on the Celtic Heroes website titled ‘Issues with Free Platinum Offers’

Is this considered as an abuse?I got the same offers again and i am not sure if I will receive platinum for doing them again lol