Sticky Header problem

On load of page with countdown timer, when numbers load into timer will pull my header menu down the page. Turn off sticky header does not conflict with Theme. Theme used is avada latest version. Website is http://www.isrx.co.uk

Will need to know when you need to look at site as have a maintenance page up while I am building site.

Other than this small issue, excellent plugin, best on market.

Kirk

https://wordpress.org/plugins/jquery-t-countdown-widget/