This is a small bug but a rather disturbing one.
In the sign up page produced by the default Members Area app, the close icon is not working
I attached an image of the page with the icon highlighted
Visit the following page and click on the link to examine the issue
https://ehalsharif92.wixsite.com/mysite-2 (click on the Log in link)
I tested the issue on more than 3 fresh templates.