Cannot close popup on iPhone

Hi there i am using popups for Divi plugin on this page https://morgan.kwokdesign.com/team/. However when I click on “read bio” on some iPhones, it seems like it is not sensing the mobile resolution because the text is getting cut off and the close “X” icon is not accessible. See screenshot: https://morgan.kwokdesign.com/wp-content/uploads/2019/05/iphone.jpg. Please advise. Thanks!

The page I need help with: [log in to see the link]