Serial numbers are case-sensitive. It is highly recommended to copy and paste the username and serial number directly from your email to avoid mistakes. ZebraHZ/Dark Zebra:
The is a unique identifier used to activate the software synthesizer following its purchase. This specific version, released in late 2013, marked the synthesizer's 10th anniversary and introduced key features such as a new distortion module and parameter locking. Licensing and Registration Process U He Zebra 2 7 Serial Number
Once you've found your serial number, you can activate your plugin by following these steps: Serial numbers are case-sensitive