We released a new version of the site this morning, with a fix that we hoped would resolve this problem. It may not have though, so our developer is looking into it further and will work on resolving it. It would be helpful, when you posted, if you told us what OS version you are using, browser and ipad version. Though even with the same set up it works for some and not others. Deb's iPad 3 with Safari and OS 6.1.3 works for her but exactly the same set up redirected for someone else.
Thanks for your patience - we'll get it sorted.