Can you pls deactivate all plugins and retry? Pls ensure the required plugins SiteOrigin Widgets Bundle and SiteOrigin Page Builder is activated. I see at least one error on your site related OpenSignal –
OneSignalSDK.js:1 Uncaught (in promise) Error: OneSignal: This app ID does match any existing app. Double check your app ID.
If you still have trouble, pls send us a support request at Livemesh Widgets->Contact Us page in site admin.
Not sure you noticed it – we were able to reproduce and resolve this with the help of one of our users who sent us an email with a login to her site. Pls update to the latest version released couple of weeks ago and the posts grid should show up again. Thanks.