We’re aware of an issue where people playing on iOS devices are being prompted to allow push notifications every time they open the app. This is not intended, and is being caused by push notifications being enabled within the Hearthstone client, but disabled on your device. We’re working on a fix that we plan to implement in our next big patch.
In the meantime, we have a workaround to share with you all:
- Open Hearthstone on your iOS device
- Press the settings cog in the top right
- Press “Options”
- In the bottom portion of that menu, under “Other,” press “Privacy”
- Press “Privacy Settings”
- Uncheck the box that reads “Enable push notifications”
Then click “Done” and you should be set.