Mobile Site

I recently installed the Constant Contact Plugin on a website and it seems to be working great and exactly how I need the sign-up form to be displayed (positioning, style, etc.).

For some reason though when I view the sign-up form on a phone I can’t click the form at all to enter an e-mail to submit. It works on the website when viewed but not mobile.

Has anyone experienced this with the plugin?

Thank you,

https://wordpress.org/plugins/constant-contact-api/