Adding Filepicker.io to existing JotForm

Hi,  I'd like to replace the traditional upload button with a filepicker.io button.  I've set up a filepicker.io account and created a test filepicker.io form, but cannot find the option to add it to my existing form in my widgets search box.

I believe the File Picker widget (Filestack/Filepicker) has been disabled or removed in the widgets list.

You can refer to these threads as to why it was removed:

http://www.jotform.com/answers/741450 

https://www.jotform.com/answers/760511 

Apologies for the inconvenience.