Plugin registration, location field problem

I implement the Facebook signup plugin for my site 45 days back. Things were working fine. Here's the link to the page:

Http://www.dallassingles.com/singles_dating_fb.aspx

10 days back, the field "position" began to act up. Essentially, was the only way to insert any content in the location of the entrance to the full Board. Users could provide location information without having to log on.

Now, the behavior has changed again. Users can type in "position" now, but its not showing the drop down options like this. For example, previously, if the user is in, it displays the same options as the Dallas, Texas or New Delhi, India, etc. Now its a plain text field.  Plain text doesn't work for me because the back-end of my page only accepts the standard format of the location as "Dallas, Texas". If the user types only ' Dallas ' or ' Dallas Texas-comma or something, that break things. Help!