Fitbit app no longer working

[AnDCh]

I have an iphone 7 running iOS 11.0.3 on verison with fitbit app version 2.41.1

The app was working fine yesterday, but today, I get an error message that say Flex is not syncing because iPhone's bluetooth is off.   My bluetooth isn't off and I was able to connect to another device.

I tried restarting the phone and deleting and reinstalling the app.  I have turned blue tooth on and off several times. Nothing works.

[AnDCh]

OK I just got it work.

Here is what I did.

1) I turned off bluetooth.

2) Opened the app.

3) Got the error message saying bluetooth is off.

4) Pressed on the error message and  a popup message came up "Turn on Bluetooth to Allow "Fitbit to Connect to Accessories"

5) Pressed Settings in the popup message which took me to Bluetooth

6) Turned on Blue tooth

[AnDCh]

An update on my approach.

This worked for about a week, but now no longer works.

I can no longer sync on my iPhone.