Contact

Email contact@hiennv.dev. Include your device model, iOS version, app version, and the steps that caused the issue.

AirPlay and external displays

Connect your iPhone or iPad and the receiver to the same Wi-Fi network. Open Control Center, choose Screen Mirroring, then select the receiver. LED Banner Board shows nearby receivers for discovery only; iOS controls the final AirPlay connection.

Screen Wall

Keep participating devices on the same local network. Start hosting on one device and join from the others. Local Network permission must be enabled for LED Banner Board in iOS Settings.

Purchases

Use Restore Purchases in the app while signed in with the Apple Account used for the original purchase. Subscription management and refunds are handled by Apple.