Mobile registration does not work

I accessed this site last night with tapatalk and browsed for awhile before deciding to register. I was sent to safari and a mobile registration site. I filled out the form and kept getting an error about a nospam question. The only thing that applied to that was the captcha. I went though this process several times before giving up. I visited via the regular site earlier to register this afternoon and found that there was an actual nospam question that did not appear on the mobile site. I just double checked and found that indeed the nospam question does not appear on the mobile site.