With the latest update of Chrome browser, third party unsecure content is blocked inside iFrame. The same behaviour is there for Safari also. Now since Helical Insight might be hosted on a non HTTPS server, that is why it is being considered as unsecured content and has been blocked.
You will be able to see the content on other browsers such as Firefox.
As soon as your Helical Insight server is also having SSL certificated i.e. it is HTTPS the iframe can be seen even on other browsers also like Chrome and Safari.