Problem with forms on iPhone, testing with ios 11.2.2

Would you happen to be able to help with a form issue & ios iPhone?

http://www.northtexasoralsurgery.com/

If you click the “what to expect” link in the top video area or schedule a consult button at the bottom (both same popup form) it opens a form in a popup / modal. Had someone also from the forum here test with there iPhone and we get strange results on the form, it moves or closes and a cursor in a field that is not in focus.

That was a plugin “layered popups”. So I tried using formcraft with its pop form thinking it was the plugin.

http://www.northtexasoralsurgery.com/test but also get the same behavior? Could it be the theme? Do you have any way to test? I will duplicate my site and try a default theme and see if that works. Any other suggestions or have you seen anything similar before?

thanks for any advice!

-George