Invalid server response 

• Installation: software.
• Installation step: LICENSE
• Know to be caused by: incorrect server configurations.
• Possible solutions:
  • enable allow_url_fopen for PHP (allow_url_fopen=On in php.ini). Contact your host to get assistance.
  • add php_openssl extension (extension=php_openssl.dll). Contact your host to get assistance.
• If above solutions did not resolve your issue, please contact SkaDate support.