First of all thanks for choosing our Theme, we are glad to be you in the WoodMart WordPress family :-).
I saw the screenshot you attached. Please deactivate all the third party plugins, activate parent theme.
Clear cache and check back. If the problem continues then provide with admin panel login details of the website to check it myself and help you out accordingly.
I have logged into your website and deactivated the events calendar plugin and the header builder is working absolutely fine on my end. Please clear cache and check back.