How can I make the application on the Facebook page open from the phone

How can I make the application on the Facebook page open from the phone

If I understood correctly you wish to add your form to the Facebook page and that it is available also to mobile devices. Please try adding your form using the method here described:

https://www.jotform.com/help/22-Adding-Form-to-Facebook-Page 

If you find any troubles please let us know the url where the form is added and the devices used, so we can make further tests.

Let us know if we can assist you further.