WP update now homepage is blank

I’m very out of my element here, maintain our programs site for the basics but did not build it. The 4.5.2 update happened and now our homepage is blank from a desktop http://www.CA4Health.org
The other pages work and it works from my iphone. We’ve tried deactivating all of the plugins and one by one reactivating, We’ve tried several different computers, browsers, etc. Any advice on how to make the content reappear on our homepage?