Please tap "Premium service (no advertisement etc.)" from the application setting screen. Paid fee will be charged, but by charging, the advertisement will be deleted and will not be displayed again. Once you charge it, you do not need to pay the money again. As long as it is the same Apple ID in the future, if you press the button to restore even after changing your iPhone or lifting the application for the rest of your life, ads are deleted free of charge, you can use the premium service function I will.