| Issue | Likely Solution | |-------|----------------| | “Invalid license key” | Double‑check the key for typos or spaces. Ensure you are using the correct key for the same app version (e.g., not mixing Nine Pro with standard Nine). | | License not restoring on new device | For Google Play purchases: simply install Nine and sign into the same Google account. For manual keys: re‑enter the key. | | Trial expired but already purchased | Clear app data or reinstall, then activate again. If issue persists, contact support. |
When you buy the license through the Google Play Store or the Apple App Store, your "key" is tied to your account. If you switch phones, you simply log in with the same account, and Nine will recognize your previous purchase. The Risks of "Free" License Keys and Cracks Nine Email License Key