BLACK THORN LABS
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iPhone support

Last Line Support

Help with combat, local saves, consumable gem purchases, optional rewarded ads, and privacy questions.

Black Thorn Labs LLCUpdated September 8, 2026

Contact support

Email durian@blackthornlabsgames.com. Include only the information needed to investigate the issue.

Email Last Line support

Helpful details

  • Last Line app version and build number.
  • iPhone model and iOS version.
  • The screen, mission, stage, or feature where the problem occurred.
  • What you expected, what happened, and whether it repeats.
  • Approximate date and time, including your time zone, for an ad or purchase problem.
  • A screenshot only when it does not reveal private information.

Never email passwords, Apple account credentials, verification codes, full payment details, or an App Review phone number.

Common fixes

The game will not launch or closes unexpectedly

  1. Install the latest available Last Line build.
  2. Restart the iPhone and confirm that iOS has available storage.
  3. Note whether the crash happens before the menu, during combat, or after a specific action.
  4. Email the build number and device details if the problem continues.

Progress or settings look wrong

Last Line saves progress locally. If you want us to investigate the current save, do not delete the app first. Close and reopen Last Line once, then contact support with the app version and the most recent action that saved correctly. Team and leaderboard backend services are disabled in the current build.

A rewarded ad is unavailable

Rewarded ads are optional and inventory dependent. The current build uses Unity LevelPlay with Unity Ads support. Check the internet connection, wait briefly, and try the reward placement again. An ad may be unavailable when no eligible ad is returned for your device, region, or current network conditions.

A completed ad gave no reward

Return to the game and allow a moment for the completion callback. If the reward still does not appear, close and reopen the relevant screen once, then email the placement or screen name and approximate time. Do not include advertising identifiers or unrelated personal information.

A consumable gem purchase is pending or missing

Apple handles payment processing. Confirm the purchase status in your Apple purchase history and reopen Last Line. Consumable gems are not normally restored like a non-consumable purchase. If Apple shows a completed charge but the gems were not delivered, email the product name, approximate date, and Apple transaction identifier. Never send full payment card details.

Refund requests and billing decisions are handled by Apple. Visit Apple's Report a Problem page for purchase history and refund options.

Privacy, deletion, and resets

Read the Last Line Privacy Policy for current information about local saves, Apple StoreKit purchases, Unity LevelPlay, Unity Ads, Ad Quality diagnostics, and mediated advertising. To remove local progress, follow the deletion and reset instructions.

Deleting the app generally removes its local game container. Device or iCloud backups may retain a copy depending on your Apple settings. Black Thorn Labs LLC cannot directly erase information controlled by Apple, Unity, or another ad provider.

Current service status

The current build keeps saves local. Production team and leaderboard backend services are disabled. Rewarded ads require an available ad from LevelPlay or a mediated network, Ad Quality may record limited diagnostic details for ad-quality investigation, and consumable gem purchases require Apple StoreKit and an active App Store connection.