Adding link to table column

I have a form with some table options and I need there to be links in the columns, allowing the user to download a file (that's associated with the option they are selecting). I've tried adding the <a href="url"> tags to the text but i keep getting a jotform 404 error when trying to test it out - links are 100% correct. Not sure what I'm doing wrong, help!

Link url's should always contain the protocol. The link on your matrix row header does not have http://

Here's a working clone:

http://form.jotformpro.com/form/41141828584962?