Community Moderator Alumni are previous members of the Moderation Team, which ensures conversations are friendly, factual, and on-topic. Moderators are here to answer questions, escalate bugs, and make sure your voice is heard by the larger Fitbit team. Learn more
Hello @ilgbfan99, have a warm welcome to the Fitbit Community, it's great to have you on board. 
Thanks for bringing this to my attention, I appreciate you have already restarted your Blaze and reinstalled the app before reaching the Forums. Have you checked if your Blaze is not currently on the Do Not Disturb Mode? You can check this by swipe down on your Blaze. If Do Not Disturb is enabled you will see the OFF button selected. However, if everything seems right with your tracker I would like to suggest you to reset Notifications from the Fitbit app following these steps:
- Go to the Bluetooth settings on your phone and tap on tracker. Then tap on Forget this Device.
- Force-close the Fitbit app by double tapping the home button on your phone and swiping up the app.
- Open the app again and tap on Account > Your Tracker > Notifications. You will receive the following Pop-up:
- Then, once you tap on Set Up, the app will begin setting up your tracker with the Bluetooth on your phone, which will prompt the next pop-up:
- Tap Pair
- Once you get back to the tracker options, tap on Notifications an enable the ones you'd like to receive.
Additionally, please go to your phone Settings > Notifications > Fitbit / Messages and make sure the following is enabled:
- Allow Notifications
- Show on Lock Screen
- Show in History.
I hope this can be helpful, give it a try and keep me posted in case you need anything else. 
Best Answer