You need to charge energy for your earners once a day before walking with it:
1. Access Suzuverse app -> Menu -> Access Suzuwalk:
2. In the main page of SuzuWalk, if your Avatar you are selecting is hungry, a CHARGE button will appear. Click on it:
4. Click on Charge energy to charge energy:
If you do not have any or enough food to feed your Avatar, you need to purchase Avatar food from Mall: https://store.suzuverse.jp/collections/energy