Invalid license key. Check it carefully and try again or contact SkaDate support team 

• Installation: software.
• Installation step: LICENSE
• Caused by: entered license key is incorrect or license must be reissued.
• Solutions:
  • Make sure to use correct license key.
  • Reissue license, if this is not your first time using the license for software installation.
• If above solutions did not resolve your issue, please contact SkaDate support with following details:
  • site URL
  • admin panel username/password
  • FTP host/username/password.