Activation errors usually stem from server configurations blocking communication with MailWizz verification servers, or using the key on multiple domains. 1. Error: "Invalid Purchase Code"

: When you enter your license key during installation, it is automatically associated with your server's IP address.

Extract the files using your cPanel File Manager or via SSH. Step 2: Run the Web Installer

: A MailWizz license is typically valid for one "end product" (one domain/installation). If you move your installation, you may need to reset your license. You can manage your active domains through the MailWizz Customer Portal.

Open your web browser and navigate to ://yourdomain.com (or ://yourdomain.com ). Step 3: Enter License Key