Mixed Content over SSL connection

Hi there!
I moved my WP installation to the production host and right now we are using only a SSL connection.

When I enter into my website I receive this error:

Mixed Content: The page at 'https://mywebsite.com/<path>' was loaded over HTTPS, but requested an insecure script 'https://assets.freshdesk.com/widget/freshwidget.js'. This request has been blocked; the content must be served over HTTPS.

I just opened a ticket into Freshdesk support system too (#765164).

Thanks for your help.