Cannot get Sense to sync with the Fitbit app

[Melrose1]

I can't get it to sync to update the app.  What do I need to do?  I have restarted my phone, charged my sense, and turned off and on my bluetooth. Also deleted the app and downloaded it again.

Moderator Edit: Clarified subject

[Rich_Laue]

What phone are you asking for help with @Melrose1 

• Have you tried clearing the fitbit Cache on the phone? 
• Through the phone's settings, have you stopped the fitbit app. 
• A restart of both the phone and tracker? 
• A shutdown of both would be a better idea. 
• Looked at the help docs https://help.fitbit.com/articles/en_US/Help_article/1866.htm?Highlight=Sync