Based on the provided text, here are some key points that can be extracted:

1. The software is called 'UUbyte DMG Editor'.

2. It requires registration after purchase.

3. There may be issues with installation if you're using an older computer or operating system.

Specifically regarding the serial code/activation issue mentioned in your question:

- If it's your first time using the code, try clicking on 'Register' 2-3 times when prompted for a possible error message.

- Make sure that each license code can only be used once per computer. Using an already activated code elsewhere will result in registration failure.

If you're still having trouble or have any further questions:

1. Check your email inbox, including the spam/junk folder, as well as other mail accounts associated with your purchase for a confirmation Email containing the activation key and personal details.

2. If you didn't receive this Email, ensure that your order has been completed successfully on our website.

In terms of compatible operating systems:

- For Mac: OS X 10.10 -10.11 (El Capitan) up to macOS 10.15 (High Sierra).

- For Windows: The software is currently only supported for use with Windows 7, 8/8.1 and Windows 10.

If you're experiencing installation issues:

1. Ensure your computer meets the minimum requirements.

2. Try uninstalling any previous versions of UUbyte DMG Editor before re-downloading and reinstalling from our official website.

For further assistance or general queries about using the software, please refer to our comprehensive tutorial available on this page: .

Uubyte dmg editor serial key