Can't publish email sign-up form to Facebook tab

I've got an email sign-up form setup. Published and good to go. I hit Landing Page Actions > Publish to Facebook > Login in successfully via FB > Choose my page and then go to the next tab in Marketo called Create A Tab. When I click the drop down though to select my page though nothing happens. No drop down, no action, nothing. Not sure if this is an issue on the FB or Marketo side. FYI, the page I'm trying to publish this to is on a Global Account. Not sure if the makes a difference but providing that info just in case.