Hi maamdonna030190,
Could you tell me your firmware version?
* Find the firmware version in Settings > System > About phone > Software information
Please make sure you have updated to the latest firmware WW-15.0410.1812.95.
Do you mean there is a notification on your phone but no LED light?
Does the LED light lit on while charging?
Please check if "blink light" is enabled. (Settings > Apps & notifications > Blink light)
If the problem is still appearing, please tell me which apps, app versions, and what kind of notifications in the apps.
If there is a short video to show us, it could help us understand more clearly.
Thank you 🙂
