As far as I know, however this is based on my experience of publishing apps with push notifications, the user will be prompt to enable/disable push notifications on first launch. They can choose to accept or decline, and this can only be further changed in settings. I believe this may be a thing with Apple as I am yet to see another application do this, however you can open a deep link “url” (path) to the app config in iOS settings with Thunkable.