This feature, while highly recommended for enhanced security, is not mandatory.
In the IP restriction settings, add the following IP addresses that Robuxio uses to securely connect to your exchange:
52.194.221.72
52.193.123.94
54.64.179.211
Important Check: After modifying your API settings, please verify that you can still see your Balance in your Dashboard. If you can, then the changes have been made correctly and your account is now even more secure.