If you are using a VPN or Proxy, please disable them or contact support team. Please provide debug info from textarea below: sk4cihqKxAi8wCoYnhQtmRr48pipt2JEgQKW9tfn8YQnWDwMgDKQvxnGbTi2T4b2t8yShVgiRRTeR8QKSYGJii426iXZmy35DbhibVKvhU9doT3agUoJCoWSXftxWUdBa499ZfsMQ7L1FsBit4agDUQDVvG1MkzaZihV8M2at6H7oiwDDfCWJWgpKiLt2wUpB9j4P1RkGQuodNbVh2SytPqmCJ
You can also try to pass an automatic check but with no guarantee.