If the app isn't working properly, for example, if × is displayed on the summoning screen, you can't play in the Aether Keep, or events aren't working properly, please try the following.
■ Troubleshooting steps:
・ Update to the latest version of the Fire Emblem Heroes app.
・ Close other apps, unnecessary browser tabs, etc.
・ Fully close out of the Fire Emblem Heroes app, then re-open it.
Note: Please take care that you do not uninstall or delete the application from your device by mistake.
・ If closing out of your Fire Emblem Heroes app does not resolve the issue, try restarting your device.
・ If you can access the app's title screen, tap Menu, then Clear Cache.
Note: We recommend doing this while connected to Wi-Fi as a game data download will be required after clearing your cache.
・ Delete large images or videos from your device to free up storage space.
Please note that, depending on your device, the steps to perform the above operations and the language used may differ from what is described above. Please refer to your device's user manual or customer support website for additional information.
If the above does not resolve your issue, please contact Customer Support via the Inquiries form at the bottom of the page.