Appointments not loading correctly in Lightbox

Hi everyone I hope you are doing great!

I am using appointments plugin with spirit theme and I added a "Book Now" button that button is linked to a lightbox where I added the following appointments shortcodes
[app_services description="none" autorefresh="1"]
[app_monthly_schedule]
[app_pagination month="1"]
[app_login]
[app_confirmation]
[app_paypal]

When I click the button it opens the lightbox with all the appointments (so far so good), but when I try to make an appointment nothing works...

The link to the page is http://www.essenzaspaholistico.com/servicios/ and the only button that right now has the lightbox is the first one "Limpieza Facial"

Thanks for your support!