As it turns out, Samsung has disabled this feature by default on its smartphones and tablets with One UI 6.1. So, if you had used notification channels for an app on One UI 6.0, those customizations will not work with One UI 6.1 by default, but Fortunately, you can enable this feature manually, and once you do, all your customization will reappear. To enable this feature, go to Settings » Notifications » Advanced Settings and enable ‘Manage notifications categories for each app'.
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As per your query, we request you kindly share the log file. Also, share video clips and images for better understanding. This will help us to further investigate and resolve this issue.
Samsung Members Application (Open Samsung Members Application > Support> Tap on error report > Type your query > Send).
Note: To ensure relevant log information is included in the error report, submit the report within 3 minutes of encountering the bug or error, and do not terminate (swipe away) the Samsung Members application until you are notified that the report has been sent. This can take up to 5 minutes.
