This demonstration has the Google paywall dialog appearing on page load. Is there any way to disable this?

I have a button with the above and only want paywall dialog to appear when the button is clicked, not on page load.

<a class="call-to-action-btn g_font-body-s i-amphtml-subs-display" href="#" subscriptions-action="subscribe" subscriptions-display="NOT granted" subscriptions-service="local" i-amphtml-subs-decorated="true">Sign up</a>