Slide In Plugin unusable in iPad

Tested the plugin in my iPad after I got a user complaint and can confirm that the plugin slides away when wanting to sign up for email list. I have a gravity form (short code) in the slide-in, changed the length of time it stays on the page, but as soon as you tap in a field to fill it in, i.e. Name or Email, the slide in slides out. What to do? Please advise.