Step 5:
Click on "Add battery".
Step 6:
Click on the small camera icon. Your phone camera will then open (if not, you will need to enable it in your phone settings). You can now scan the barcode next to the 7-digit code on your battery.
Step 7:
Now click on the camera icon in the second field. And scan the 5-digit code on the card that you can find in the spare key when you receive your bike.