Hello @Montyz, good to see you here in the Fitbit Community as a new member. Are you trying to set up your Blaze through your Fitbit app? Keep in mind only the Fitbit app enables the communication of your tracker with your phone.
If this not the case and the issue persist try the steps of the following article: Why can't I set up my Fitbit device?.
Now I saw on your title you are not receiving notifications, the explanation to this is because your tracker is not successfully paired. But in case you are experiencing issues in this area too the following post might give you some extra help: My tracker isn't receiving notifications (Android Fitbit app).
Hope this helps and for more questions stay tuned to the Fitbit Community!
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