If you are using a VPN or Proxy, please disable them or contact support team. Please provide debug info from textarea below: sk4cihqKxAi8wCoYo1xVw2pZ9zk9ES3voKZKB5QJaUms7ChZH6mUzi6tCY5qJm82uM9JrctTBo2SuT784JpHMQdwv79VHf6Fd6vUtPSiupNtpUfjRtSjRJfodbkZJ2dzxCZB1yrxMAmwczX2wyUP6zTsoYEk7zcutjXSbYFNYjhhteebQcTSFuUGDY38Ke5cweekSnfumJXzQ723tWdfHvC9Uz
You can also try to pass an automatic check but with no guarantee.