If you're experiencing an issue where the customer notes are no longer visible after installing the ADG Discounts & Gifts app, here are a few steps you can take to troubleshoot the problem:
Check app settings: Review the settings of the ADG Discounts & Gifts app to see if there is any configuration related to customer notes. Make sure that the app is not explicitly hiding or modifying the visibility of customer notes.
Disable the app temporarily: Temporarily disable the ADG Discounts & Gifts app to see if the customer notes reappear. This can help determine if the app is indeed causing the issue. If the customer notes reappear after disabling the app, it suggests that the app may be conflicting with the visibility of customer notes.