If you are using a VPN or Proxy, please disable them or contact support team. Please provide debug info from textarea below: 4u7f6MFsCefgmUxVFKhBocPWaH432f4gjYNMRgcoksLX26LGL64pihfH6f3ERuj1vKEySuRAP3b7csP2mixQXagMzQ9ny9NBv3v9SgLFrrdEBNS7qQR7ZiNurDfPkvfHXjLRWsABsuDzi3X2KKSzunuVp
You can also try to pass an automatic check but with no guarantee.