Jetpack "Like" Button Not Working

The Jetpack “Like” button is being flaky and inconsistent. It works on some posts, but on others, it just hangs at “loading” – this post is an example of that – http://www.indiesunlimited.com/2016/08/21/book-marketing-scams/

Other posts, the button appears, and it lets you click on it, but if you navigate away from that page and then back, your like is not registered anymore – here is an example of that – http://www.indiesunlimited.com/2016/08/21/book-marketing-scams/

This seems to be happening since the last Jetpack update. Help please!

Thank you.