How to sign up Codepen

When I open the sign up page, instead of
captcha code, there is a block of text which says:

“ There is supposed to be a captcha right here. If you don’t see it, that’s weird, and
you’ll be prevented from signing up for an account. If this is happening to you, please contact support and we’ll make sure you get an account.”

maybe try with a different webbrowser. firefox, chrome etc.

This problem is found on Firefox, IE11 and Edge on Windows 10.