I've never been to your site before and I do confirm there is no the link in your checkout routine:
See Mac FireFox screen shot at
http://awesomescreenshot.com/09c22ejz2e
Mac Chrome screen shot -
http://awesomescreenshot.com/0d022ekk26
Perhaps the difference is caused by what customer you go into checkout routine.
Anyways, I see you have an annual technical support subscription so this is covered by our techs, I mean they are to figure out what is wrong within your technical support subscription. It could be related to a customization or incomplete upgrade from earlier version.