Please try the following steps in order:
- Reboot your device and restart the game.
- Check for app updates (we recommend keeping the app up to date).
- Check your storage space (delete unnecessary files if space is low).
- Verify your device specifications (see "What are the supported devices and minimum system requirements?" for details).
- Check the official channels for server maintenance or service notices.
If the issue is not resolved, please contact us through the in-game Customer Support menu.