If you are using either the BITES Flex or Smart plan this is because activity bites are set to "Not Used" by default as it is encouraged to not eat your activity bites. If you would like to instead use your activity bites, you can change your settings:

  1. Go the Settings tab
  2. Tap App Preferences
  3. Tap Activity Allowances
  4. Set it to use Activity Daily or Weekly depending on which you prefer