Step 1: Activate Bluetooth
Make sure Bluetooth is activated on your device. This can be checked in the settings of your phone.
Step 2: Log in into the moveUP app
Option A:
To pair your activity tracker click on the Menu sign on the top left of your screen. Next, choose “Activity tracker” from the Menu list.

Option B:
Scroll on the main moveUP page (Overview) to the bottom until Activity tracker and click on “Pair your activity tracker to sync your steps”.

Step 3: Agree on location settings

Step 4: Choose your activity tracker
OPTION A : Activity tracker wearable

You have two options: using a Garmin Vivofit 4 or a personal wearable.
OPTION B : Health app

Using a Health app like Apple Health app (iPhone) or Google-fit app (Android):
the Health app is a standard app on iPhone and does not need to be downloaded.
For android, you should download the Google Fit app in the Google play store.
Click ‘Continue’ to select your activity tracker
Step 5: Click ‘start select’

Step 6: Installation Activity tracker wearable or Health app

Click on the brand of your Activity tracker wearable.
If you don’t have a Garmin or Withings device, click ‘Other brand’.
Follow the instructions of the Garmin/Withings app
More info: here
Activity tracker wearable

Android: you should download the Google Fit app in the Google play store.
Apple: the Health app is a standard app on iPhone and does not need to be downloaded.
Click on Confirm.