You can turn on/off the app notifications in the app settings.
For Android users, please tap and hold the app icon, and tap the info option, you can find the notification permissions option there.
For iOS users, please get into Settings first and find Tycoon Blitz in your apps list, and find notification options there.
We highly recommend you to turn on the app notification from Tycoon Blitz because there will be the latest announcement of the app updates and daily freebies!