Error: Male don't allow register. Any age Limit?

Hi. My name is Dennis, and I was trying to apply for an online English teacher position – to teach Korean student. Unfortunately, I got an error message saying that ‘Error: Male don’t allow register‘ when there are actually only two [2] radio buttons to choose – male or female. So I had chosen male. I really need help to get this issue fixed & reapply for this job. And also, is there actually an age limit when applying for this job? We really hope for the best & looking forward for more better resolutions. Thank you.

Regards,
Dennis L.