SSL in Chrome browser show GA script is "insecure"

I installed Multisite Analytics for

And after that I bought a SSL ceritifcate for this domain also, and Chrome show the red cross onto this domain, and when I checked in Javascript console, it show this:

The page at ran insecure content from

When I deactive Multisite Analytics plugin, it gone.

How can I do it? I sell service and I do not my customer get any doubt on me.