HTML is malformed when the data is incomplete. There are open tables at the end and after the the third row of badges which only has two badges has a missing </tr> tag.
It looks like the foursquare.com account you used to login doesn't actually have any checkins in it. That is why it is not showing up. Please check that you are using the correct foursquare account (maybe you have a couple of accounts under different emails?). Please let me know, and please submit a support request if it is still occurring:
The questions in the support form will help me to help you faster.
Thanks for spotting this. I'll get it fixed asap and let you know.
Thankyou again for taking the time to let me know.
Ryan Snook commented
There is also a tag at the end, <font-color=\"green\"> should be <font color=\"green\">