Walter,
Your Canvas URL is working on Facebook. To see it, go to
apps.facebook.com/[your-namespace]
I don't want to post your namespace or website address here, but for you, your namespace is your domain name without the '.org'
For the Page Tab, you need to have a Facebook Page. Then, you can 'add' the tab to your Page. If you need assistance with this, please let us know.
Thanks,
Alex