stay in touch button is hidden by browser bottom bar in mobile safari

Discovered with paid subscription on the hosted version on my iphone and safari

i see the button when this modal opens but when i try to click the button on the bottom safari's bottom toolbar opens up which obscures the button. because it's a modal, i can't scroll down to view the button. i've tried to rotate the phone to horizontal mode but then the button is unclickable. with this bug i am unable to click on this button on my phone.