If you are using a VPN or Proxy, please disable them or contact support team. Please provide debug info from textarea below: btv2aSRB6ST8URhquNUXhfkyKKnMbPsQUPA8UURfYMZUJdYhmtcNmUvPNuetZsbCx5gs1HuwjcRSFq3TSgkS8DdZUqGVm1mcperrWzMMnAPvVYy7io1QPfLVCsWm3vyDBXmBfuK3X56XJAt88QRk
You can also try to pass an automatic check but with no guarantee.