I'm guessing that wix is detecting the playbook as a mobile device, and redirecting to a page that is sending custom html that the playbook is unhappy with. I can see it works fine on a desktop, but automatically presents a mobile version on my phone. I've noticed that some sites are now more and more recognizing that the playbook is mobile, which is not what I want.
Try the free origami browser. It allows you to play with the user agent string, so the playbook can pose as Chrome, or Firefox, etc.