Can`t uninstall app Pace


I installed Pace but now I wanna uninstall it from my domain. when I click the uninstall button, the page becomes dark and nothing happens. could you please help.
the domain name is :


It may be a browser issue. Try clearing your cache and cookies, or a different browser, and see if that helps.

If not, then open a Support ticket? support AT cloudflare DOT com