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
A warm welcome to the Forums @Chaz520. If your tracker is not vibrating, I recommend Restarting your Blaze. After the restart process, set a silent alarm to see if it buzzes. You can set an alarm by doing the following from your iOS Fitbit app:
1. Go to your Fitbit account
2. Tap Account
3. Tap the tracker's icon
4. Tap Silent Alarm
5. Set your Alarm
6. Sync
Let me know the outcome. 
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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
It's great to hear that you receive a new tracker @Chaz520! 
If you need anything else, do not hesitate in posting it.
Keep the stepping up!
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