Rather than risking security by downloading untrusted APKs, you can resolve most license errors through official methods:

Once you've resolved the license error, follow these steps to install APK files using Hex Installer:

: This is the most common fix for Samsung users on One UI 5 and above. Security and privacy (or Biometrics and Security). Secure Folder and select from its internal settings page. Clear Galaxy Themes Cache

If you are looking for free customization alternatives, consider exploring Samsung Good Lock (specifically the Theme Park

If you have searched for you are likely frustrated by pop-ups, theme crashes, or the app refusing to apply your custom design. This article will explain why the license error occurs, the legal landscape surrounding it, and—most importantly—how to use Hex Installer completely free, without errors, using legitimate methods.