进度默认保存在当前设备。需要跨设备使用时，请在设置中生成恢复密钥并妥善保存。Polaris Matrix 无法查看或找回丢失的恢复密钥。
原生 App 会读取 iOS 向第三方应用开放的 Norwegian Bokmål 声音，并优先选择质量最高的一个。即使你已在 Siri 设置中选择 Voice 2，Apple 也可能不把它开放给语音合成功能；如果它出现在 App 的声音列表中，就可以直接选择。
录音完成后可立即在练习卡片上回听，并仅在你主动开始口语练习后发送用于即时转写。离开卡片时，本地临时录音会被释放。详细说明见隐私政策。
确认设备登录的是原购买 Apple ID，然后在应用付费页面选择“恢复购买”。不要重复购买同一权益。
请通过 Polaris Matrix 联系页面描述设备、系统版本和问题步骤。请勿发送恢复密钥或完整录音。
Progress is stored on the current device by default. To use another device, create a recovery key in Settings and keep it safe. Polaris Matrix cannot view or recover a lost key.
The native app reads the Norwegian Bokmål voices that iOS exposes to third-party apps and prefers the highest-quality option. Apple may not expose Siri Voice 2 to speech synthesis even when you selected it for Siri; if it appears in the app's voice list, you can select it directly.
You can replay a recording on the practice card immediately after recording. Audio is sent for immediate transcription only after you start speaking practice, and the local temporary recording is released when you leave the card. See the Privacy Policy for details.
Confirm that the device uses the Apple ID that made the purchase, then select “Restore Purchases” on the app’s paywall. Do not purchase the same access twice.
Use the Polaris Matrix contact page and include your device, OS version, and steps to reproduce the issue. Do not send your recovery key or a complete voice recording.