The following steps may help with the issue. Even if you have attempted something similar, please attempt the steps listed below for the purposes of troubleshooting.
- Confirm the available storage space on your device. 6 GB or more of additional free space is recommended when using this app.
- Close all other applications running concurrently with One Punch Man World.
- Restart the apps and your device.
If your account is linked, please try repair data and see if that fixes the issue you are experiencing:
- Make sure your account is linked
- On the Title Screen click on the 🛠️ button
- Click "Confirm" to check repair data