You can do one thing and there is a high chance that it will work. You can place in your app settings a notification button (On, Off toggle). Take a screenshot for it and attach it in the new release and mention for apple that with this button users will be able to turn of notifs. Even if the button does nothing, it will get ur app accepted cause i don't think apple will go this far in testing your app. Make sure you have a notifications permission screen this way it will be optional without any coding. If it's necessary, mention in your app intro screen (when 1st time using the app) that notifications permission must be accepted in order to bla bla bla). I advised you to add that toggle button and take a screenshot for it cause sometimes apple review process is complete frustration and they ask for irrational features that don't abide with ur app's needs. Try it ;)