If you are using a VPN or Proxy, please disable them or contact support team. Please provide debug info from textarea below: sk4cihqKxAi8wCoYnhPFHabGCy6ma4zn4PFmfkZWQTkZUpykHt9ts9X711EnagfGmgUStkxozGcwNcXMMZVDS3TAhvEL3BkidPFZx7sEKYqJWJoHumNwHCwdPwv3gprCoCQz1nZvJYJRZXwgsiAYx7GHaff411mb9FS8tYrwi9H6QFGvKKNrZnSYZcX16x6jDErxzpWpJGgfN4X34eDvyu3mEE
You can also try to pass an automatic check but with no guarantee.