Embedded form on Facebook: Why it is stuck on please wait when trying to submit the form?

Something else, our facebook fans cannot submit any requests through the facebook tab of jotform as per the attached photo ??

I'm not sure how you're embedding your form, but here are two guides that will help you with that: 

Adding-a-form-to-your-Facebook-page

Adding-a-form-to-Facebook-Custom-iFrame-App-

If this still does not help, please provide us the Facebook page where the form is embedded on, we will be glad to check it and find if there is something that is not allowing to submit the form.