If you are using a VPN or Proxy, please disable them or contact support team. Please provide debug info from textarea below: sk4cihqKxAi8wCoYnhPEwqejDGMum2nn9XWAQ8bE19GUw336dMYX6AcVBU3Qq494Gap9AnwNv461FbFB8RvVxtYDsyffmZm4kwD9aFMQZvHe7c36K28AjjiKFXcLELevLzzB5WwciYeKfqiHKYRPcbYJjdhKuZ4p8LRqABssZNqVyqBD3aoDMNApkLuP1iHkB2wYwQnLAhtyX6cqf2E5rSH9HG
You can also try to pass an automatic check but with no guarantee.