Issue with my website

[Russell22]

Hello everyone, I am noticing a serious issue with my website from yesterday. I am going to open my website on Windows 7 PC. But the website is not opening. Showing not secure in the URL. I have tried to open this website from my friend's pc (Windows 7), the same issue is happening. 

But when I open my website in Windows 10, it opens normally.

Then why it is not opening in Windows 7? I am confused. Any idea would be definitely appreciated.

[Shane]

My Windows 7 test PC had no issue opening your website as "secure" in the URL via both Firefox and Chrome, so perhaps you've already fixed it. On the other hand it also blocked a lot of third-party objects (probably advertising trackers?).