Jetpack Twitter widget not displaying in Google Chrome (iFrame Issue)

I never noticed some inconsistencies with iFrames not displaying in Google Chrome, but displaying in other browsers. For example, the Jetpack plugin includes the Twitter widget and I have been unable to get this to display in Chrome. Take a look at my blog here: https://www.saltedlolly.com

The Twitter widget should be visible on the left. I have managed to get it to display in Firefox but even that is not working just now, although this could be a VPN issue (I live in China). Has anyone else encountered this problem? How do I get iFrames to display?