Social Share not going back to form on mobile view?

I am embedding my form into my mobile app builder via direct link and have a social share feature that is required in order to submit the form. On the desktop view it works, however upon testing through my mobile app platform, once I share on social media (FB) it takes me to a blank screen and not back to my form? How can I direct back to my form after I hit "share"?

Thank you for contacting us. 

I tested it on my side, but it works fine both for on desktop and on my mobile device.

Could you please provide us more information for the issue you have experiencing.  We would be pleased if you also share with us the URL where you embed your form to let us a close study on it.

Waiting for your return.