Leave thumbs up.
I think you might have forgot to provide enough Permission.
Open the Google Fit application
Go to Settings -> Connected Applications
Check whether HooFit is displayed in the list there.
If it's not visible, exit HooFit
Go to HooFit again and give the right permission when preparing the Data Source.
After that try to check
Open Phone Settings -> Account -> Google
Tap the account that you have configured on Google Fit
Look for the Google Fit / Google Fit Data option in the list
Make sure the radio button next to Google Fit data and Google Fit is in the Active position
Note the date of the last synchronization on this line. Date must be today's date. If not, try turning off synchronization and turning it on again.