It is active indeed. You see the error in the debug console of the browser.
?ign_skip=5302743257149:1528 Uncaught TypeError: grecaptcha.execute is not a function
at Object.execute (?ign_skip=5302743257149:1528)
at HTMLDocument.executeOnContactform (?ign_skip=5302743257149:1554)
at HTMLInputElement.trigger (jquery.js?ver=1.12.4-wp:3)
at Object.trigger (jquery.js?ver=1.12.4-wp:3)
at Object.a.event.trigger (jquery-migrate.min.js?ver=1.4.1:2)
at HTMLInputElement.<anonymous> (jquery.js?ver=1.12.4-wp:3)
at Function.each (jquery.js?ver=1.12.4-wp:2)
at a.fn.init.each (jquery.js?ver=1.12.4-wp:2)
at a.fn.init.trigger (jquery.js?ver=1.12.4-wp:3)
at a.fn.init.n.fn.<computed> [as click] (jquery.js?ver=1.12.4-wp:4)