If you're experiencing issues with registration or licensing, I recommend contacting the software vendor's support team for assistance.

If your license works initially but becomes invalid after updating to a newer version, it is usually because you downloaded the wrong version (e.g., you have a Pro license but downloaded the Ultimate installer, or vice versa). Double‑check that you are downloading the correct version for your license. With the unified installer in version 9.1.6 and later, this issue should occur less frequently, but if you are running an older version, ensure you are using the correct installer.

: A dialog box will appear requesting your registration information.

Software developers regularly update their activation servers. Publicly shared registration emails and keys are quickly flagged as fraudulent and blacklisted. Even if a public code works initially, the software will likely revert to trial mode during the next silent background update or system restart. 3. Missing Updates and Security Patches

Registering Any Video Converter Ultimate with your official registration email and license key ensures you have access to a secure, fully functional video tool. Keep your registration email safe to enjoy lifetime support and updates.

– If the automated system does not work, email support@any-video-converter.com with your purchase details. Include the email address and order ID if you have them, and the team will resend your license code.

：点击界面右上角的 钥匙图标 ，进入激活界面。输入你购买时使用的注册邮箱和收到的注册码，点击“Register”即可完成激活。从V9.1.6开始， Any Video Converter Free、Pro和Ultimate版本已经合并为一个统一软件 ，你下载安装后，只需用对应版本的注册码激活，即可解锁相应功能。

“Your order receipt and license code for Any Video Converter Ultimate”