Ensure you're logged into the same Google Fit account on your app (i.e. Flabuless/CERRA) and the Google Fit app itself. 

for e.g. In the google fit app, the account logged in is john.doe@gmail.com, then make sure that its the same account that you sync with your app. It could be possible that you're logged in two different accounts and that's why the steps are not syncing.

Google Fit usually takes a while to sync so even if you're account is the same on both the apps please give it some time to sync the app. 

If you're still facing issues, drop us an email at support@rewardz.ae for UAE or support@rewardz.sg for Singapore along with a screenshot of the app as well as Google Fit app to compare the steps data.