If you are using a VPN or Proxy, please disable them or contact support team. Please provide debug info from textarea below: sk4cihqKxAi8wCoYo1xV3nQa4p331xhKAW2yJS51DV8wAYPDbxxkpxoR9YJbGV2bzvycwPRKaCDFXXLU1tCQykhuCp7toQSqFLqzA1HaPBgiYscQyvT5yqcbAYSC9rKZDXC8hpJRyuhzJ3qrwV29itUEn7t73DJL9wuHzzirHoquuBJCcMRH5RuUurQWqQ2p9PtCGVgJLmSdrV5EQ7DpXK31Jv
You can also try to pass an automatic check but with no guarantee.