If you are using a VPN or Proxy, please disable them or contact support team. Please provide debug info from textarea below: sk4cihqKxAi8wCoYnhQuGj5M3gE2gGJ37CA2H7SJNkeY4SdGNkrJrUcpo45A44rkHyHQVqJtrEY883c9bvQmKJwczmbYg97XD3zrvARDqHCvKHcgGu8486NnMPC63vKcNkzScnKcUai9K4R1iKZge3ZbdyzCEucZcV4ZEpXdG21McgG5NRMZXAJeX5Btqm3HbsZZ9dxNRnBDLfLUmNhkNorxpv
You can also try to pass an automatic check but with no guarantee.