If you no longer wish to receive notifications regarding your Facebook ad account, you can disable them. Only the user himself is able to turn off his notifications through the ad account.
The process is very simple, just follow the steps below:
Step 1/4: Log in to your Business Facebook account.
Step 2/4: Click on the top menu, and then "Ad account settings"
Step 3/4: In your account settings, click on "Notifications".
Step 4/4: Under Notifications, clear the checkboxes for unwanted notifications. Analyze each item and clear the ones you no longer want to receive.
All set! Now just click on "Save changes" and the notification settings have been updated. If you want to be notified again, just check the checkboxes on the Notifications page again.